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Natural Gas Prices Monthly
(Data Source: World Bank Commodity Markets section)
This section captures trend in monthly Natural Gas prices in US, Europe and in LNG Japan price. In the Table:
US Gas price is the spot price at Henry Hub, Louisiana
Europe Gas price: from April 2015, Netherlands Title Transfer Facility (TTF); April 2010 to March 2015, average import border price and a spot price component, including UK; during June 2000 - March 2010 prices excludes UK
LNG Price Japan is the import price, cif; recent two months' averages are estimates
Natural gas index (Laspeyres), is the average of Europe, US and Japan (LNG), weights based on 5-year average consumption volumes, updated every 5 years, except the 11-year period 1960-70
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| Month | Natural Gas Price US dollar per MMBTU | Natural Gas Price Europe dollar per MMBTU | LNG Price Japan dollar per MMBTU | Natural Gas Index 2010 equal to 100 |
|---|---|---|---|---|
| Oct-25 | 3.2 | 10.9 | 11.4 | 98.3 |
| Sep-25 | 3.0 | 11.1 | 11.5 | 96.7 |
| Aug-25 | 2.9 | 11.1 | 11.8 | 96.3 |
| Jul-25 | 3.2 | 11.6 | 11.9 | 102.1 |
| Jun-25 | 3.0 | 12.4 | 12.2 | 103.7 |
| May-25 | 3.1 | 11.7 | 12.3 | 101.6 |
| Apr-25 | 3.4 | 11.6 | 12.7 | 105.0 |
| Mar-25 | 4.1 | 13.2 | 12.5 | 121.5 |
| Feb-25 | 4.2 | 15.3 | 12.8 | 132.9 |
| Jan-25 | 4.1 | 14.7 | 13.2 | 128.4 |
| Dec-24 | 3.0 | 13.9 | 12.6 | 111.1 |
| Nov-24 | 2.1 | 13.9 | 12.8 | 100.4 |
| Oct-24 | 2.2 | 12.9 | 12.5 | 96.7 |
| Sep-24 | 2.3 | 11.8 | 13.0 | 92.1 |
| Aug-24 | 2.0 | 12.4 | 13.3 | 92.0 |
| Jul-24 | 2.1 | 10.3 | 12.5 | 82.8 |
| Jun-24 | 2.5 | 10.9 | 12.1 | 90.4 |
| May-24 | 2.1 | 10.1 | 12.2 | 82.2 |
| Apr-24 | 1.6 | 9.1 | 11.9 | 70.6 |
| Mar-24 | 1.5 | 8.6 | 13.2 | 67.8 |
| Feb-24 | 1.7 | 8.1 | 13.6 | 68.9 |
| Jan-24 | 3.2 | 9.6 | 14.3 | 93.8 |
| Dec-23 | 2.5 | 11.5 | 14.4 | 95.2 |
| Nov-23 | 2.7 | 14.5 | 12.7 | 110.4 |
| Oct-23 | 3.0 | 14.6 | 12.6 | 114.1 |
| Sep-23 | 2.6 | 11.5 | 12.2 | 95.2 |
| Aug-23 | 2.6 | 11.2 | 12.5 | 93.1 |
| Jul-23 | 2.6 | 9.5 | 13.0 | 85.2 |
| Jun-23 | 2.2 | 10.4 | 12.7 | 84.3 |
| May-23 | 2.1 | 10.1 | 13.4 | 83.2 |
| Apr-23 | 2.2 | 13.5 | 14.4 | 100.3 |
| Mar-23 | 2.3 | 13.8 | 16.0 | 104.5 |
| Feb-23 | 2.4 | 16.5 | 18.4 | 120.0 |
| Jan-23 | 3.3 | 20.2 | 20.2 | 149.4 |
| Dec-22 | 5.5 | 36.0 | 20.6 | 252.1 |
| Nov-22 | 5.3 | 35.7 | 19.6 | 247.2 |
| Oct-22 | 5.6 | 39.0 | 21.8 | 268.5 |
| Sep-22 | 7.8 | 59.1 | 23.7 | 391.3 |
| Aug-22 | 8.8 | 70.0 | 21.2 | 454.0 |
| Jul-22 | 7.3 | 51.3 | 18.9 | 344.9 |
| Jun-22 | 7.7 | 33.6 | 15.5 | 263.2 |
| May-22 | 8.1 | 29.2 | 16.7 | 248.8 |
| Apr-22 | 6.5 | 32.2 | 16.3 | 243.4 |
| Mar-22 | 4.9 | 42.4 | 15.1 | 271.1 |
| Feb-22 | 4.7 | 27.2 | 17.0 | 197.5 |
| Jan-22 | 4.3 | 28.3 | 14.7 | 196.9 |
| Dec-21 | 3.7 | 38.0 | 15.3 | 236.5 |
| Nov-21 | 5.0 | 27.6 | 15.3 | 202.6 |
| Oct-21 | 5.5 | 31.1 | 12.4 | 222.5 |
| Sep-21 | 5.1 | 22.8 | 11.4 | 178.4 |
| Aug-21 | 4.0 | 15.4 | 10.8 | 129.8 |
| Jul-21 | 3.8 | 12.5 | 10.4 | 112.7 |
| Jun-21 | 3.2 | 10.3 | 9.6 | 94.7 |
| May-21 | 2.9 | 8.9 | 8.9 | 83.5 |
| Apr-21 | 2.6 | 7.1 | 8.3 | 71.3 |
| Mar-21 | 2.6 | 6.1 | 7.9 | 65.6 |
| Feb-21 | 5.1 | 6.2 | 9.9 | 97.5 |
| Jan-21 | 2.7 | 7.3 | 9.0 | 73.0 |
| Dec-20 | 2.5 | 5.9 | 7.7 | 63.9 |
| Nov-20 | 2.6 | 4.8 | 6.9 | 59.1 |
| Oct-20 | 2.2 | 4.9 | 6.2 | 54.7 |
| Sep-20 | 1.9 | 4.0 | 5.9 | 46.1 |
| Aug-20 | 2.3 | 2.9 | 6.3 | 45.9 |
| Jul-20 | 1.7 | 1.8 | 7.8 | 34.9 |
| Jun-20 | 1.6 | 1.8 | 9.0 | 34.0 |
| May-20 | 1.8 | 1.6 | 10.1 | 35.6 |
| Apr-20 | 1.7 | 2.1 | 10.0 | 38.0 |
| Mar-20 | 1.8 | 2.7 | 10.2 | 41.6 |
| Feb-20 | 1.9 | 2.9 | 9.9 | 43.8 |
| Jan-20 | 2.0 | 3.6 | 9.9 | 48.6 |
| Dec-19 | 2.2 | 4.6 | 10.1 | 56.0 |
| Nov-19 | 2.7 | 5.2 | 10.0 | 63.5 |
| Oct-19 | 2.3 | 5.1 | 10.0 | 59.1 |
| Sep-19 | 2.6 | 4.2 | 10.1 | 58.2 |
| Aug-19 | 2.2 | 3.7 | 10.9 | 51.8 |
| Jul-19 | 2.4 | 3.6 | 10.1 | 52.7 |
| Jun-19 | 2.4 | 3.6 | 10.0 | 53.0 |
| May-19 | 2.6 | 4.3 | 10.1 | 59.4 |
| Apr-19 | 2.6 | 4.9 | 10.3 | 62.5 |
| Mar-19 | 2.9 | 5.2 | 11.3 | 67.9 |
| Feb-19 | 2.7 | 6.0 | 11.8 | 69.5 |
| Jan-19 | 3.1 | 7.3 | 12.0 | 80.1 |
| Dec-18 | 4.0 | 8.0 | 12.0 | 94.4 |
| Nov-18 | 4.1 | 8.3 | 11.7 | 97.4 |
| Oct-18 | 3.3 | 8.8 | 11.7 | 89.6 |
| Sep-18 | 3.0 | 9.5 | 11.3 | 89.2 |
| Aug-18 | 3.0 | 8.1 | 10.9 | 81.7 |
| Jul-18 | 2.8 | 7.6 | 10.4 | 77.5 |
| Jun-18 | 3.0 | 7.4 | 10.4 | 78.3 |
| May-18 | 2.8 | 7.5 | 10.3 | 76.5 |
| Apr-18 | 2.8 | 6.9 | 10.1 | 73.5 |
| Mar-18 | 2.7 | 6.7 | 10.1 | 71.5 |
| Feb-18 | 2.7 | 6.7 | 9.8 | 71.0 |
| Jan-18 | 3.9 | 6.7 | 9.3 | 84.8 |
| Dec-17 | 2.8 | 7.1 | 8.6 | 73.3 |
| Nov-17 | 3.0 | 6.7 | 8.5 | 73.9 |
| Oct-17 | 2.9 | 6.2 | 8.3 | 69.8 |
| Sep-17 | 3.0 | 6.0 | 8.6 | 70.2 |
| Aug-17 | 2.9 | 5.5 | 8.9 | 67.0 |
| Jul-17 | 3.0 | 5.0 | 8.9 | 65.8 |
| Jun-17 | 2.9 | 4.9 | 8.9 | 65.0 |
| May-17 | 3.1 | 5.1 | 9.1 | 68.2 |
| Apr-17 | 3.1 | 5.0 | 8.8 | 67.2 |
| Mar-17 | 2.9 | 5.0 | 8.2 | 64.4 |
| Feb-17 | 2.8 | 6.1 | 8.4 | 68.8 |
| Jan-17 | 3.3 | 6.1 | 8.0 | 74.3 |
| Dec-16 | 3.6 | 5.4 | 7.6 | 74.4 |
| Nov-16 | 2.5 | 5.7 | 7.6 | 62.6 |
| Oct-16 | 2.9 | 5.3 | 7.7 | 66.4 |
| Sep-16 | 3.0 | 4.3 | 7.5 | 61.4 |
| Aug-16 | 2.8 | 4.0 | 7.1 | 58.0 |
| Jul-16 | 2.8 | 4.7 | 6.8 | 60.7 |
| Jun-16 | 2.6 | 4.8 | 6.4 | 58.1 |
| May-16 | 1.9 | 4.3 | 6.3 | 48.2 |
| Apr-16 | 1.9 | 4.0 | 6.8 | 46.6 |
| Mar-16 | 1.7 | 3.9 | 7.7 | 44.5 |
| Feb-16 | 2.0 | 4.0 | 8.6 | 48.4 |
| Jan-16 | 2.3 | 4.4 | 8.4 | 54.2 |
| Dec-15 | 1.9 | 5.1 | 9.1 | 53.7 |
| Nov-15 | 2.1 | 5.5 | 9.5 | 57.8 |
| Oct-15 | 2.3 | 6.0 | 10.1 | 63.6 |
| Sep-15 | 2.6 | 6.3 | 10.3 | 69.0 |
| Aug-15 | 2.8 | 6.3 | 9.8 | 70.4 |
| Jul-15 | 2.8 | 6.7 | 9.5 | 72.6 |
| Jun-15 | 2.8 | 6.7 | 9.2 | 71.5 |
| May-15 | 2.8 | 6.7 | 9.3 | 72.6 |
| Apr-15 | 2.6 | 6.8 | 10.9 | 70.9 |
| Mar-15 | 2.8 | 8.3 | 13.0 | 82.2 |
| Feb-15 | 2.8 | 8.3 | 14.2 | 83.5 |
| Jan-15 | 3.0 | 9.3 | 16.2 | 91.1 |
| Dec-14 | 3.4 | 9.8 | 15.6 | 99.0 |
| Nov-14 | 4.1 | 8.9 | 15.6 | 102.7 |
| Oct-14 | 3.8 | 9.8 | 15.9 | 103.0 |
| Sep-14 | 3.9 | 9.2 | 15.2 | 101.8 |
| Aug-14 | 3.9 | 9.1 | 15.7 | 101.3 |
| Jul-14 | 4.0 | 9.3 | 15.2 | 103.1 |
| Jun-14 | 4.6 | 9.8 | 16.1 | 112.9 |
| May-14 | 4.6 | 10.2 | 16.3 | 115.0 |
| Apr-14 | 4.6 | 10.7 | 16.8 | 118.7 |
| Mar-14 | 4.9 | 10.9 | 16.6 | 122.2 |
| Feb-14 | 6.0 | 11.3 | 16.8 | 137.6 |
| Jan-14 | 4.7 | 11.6 | 16.7 | 123.5 |
| Dec-13 | 4.2 | 11.6 | 16.4 | 117.5 |
| Nov-13 | 3.6 | 11.4 | 15.4 | 108.7 |
| Oct-13 | 3.7 | 11.4 | 15.3 | 109.0 |
| Sep-13 | 3.6 | 11.3 | 15.0 | 107.5 |
| Aug-13 | 3.4 | 11.6 | 15.6 | 107.5 |
| Jul-13 | 3.6 | 11.6 | 16.2 | 110.1 |
| Jun-13 | 3.8 | 11.9 | 16.6 | 114.4 |
| May-13 | 4.0 | 12.3 | 16.2 | 118.5 |
| Apr-13 | 4.2 | 12.9 | 16.2 | 122.8 |
| Mar-13 | 3.8 | 11.9 | 16.3 | 113.7 |
| Feb-13 | 3.3 | 11.8 | 16.5 | 107.5 |
| Jan-13 | 3.3 | 11.9 | 15.9 | 107.6 |
| Dec-12 | 3.3 | 11.8 | 15.4 | 107.0 |
| Nov-12 | 3.5 | 11.8 | 15.0 | 109.4 |
| Oct-12 | 3.3 | 11.6 | 15.3 | 105.7 |
| Sep-12 | 2.8 | 11.1 | 16.8 | 98.6 |
| Aug-12 | 2.8 | 11.2 | 17.7 | 99.6 |
| Jul-12 | 2.9 | 11.1 | 18.1 | 100.9 |
| Jun-12 | 2.5 | 11.5 | 17.2 | 96.1 |
| May-12 | 2.4 | 11.6 | 17.1 | 96.5 |
| Apr-12 | 1.9 | 11.4 | 16.9 | 89.3 |
| Mar-12 | 2.2 | 12.0 | 16.3 | 94.3 |
| Feb-12 | 2.5 | 11.1 | 16.0 | 94.3 |
| Jan-12 | 2.7 | 11.5 | 16.7 | 98.3 |
| Dec-11 | 3.2 | 11.5 | 16.5 | 104.4 |
| Nov-11 | 3.2 | 11.3 | 16.8 | 104.6 |
| Oct-11 | 3.6 | 11.4 | 16.5 | 108.8 |
| Sep-11 | 3.9 | 10.9 | 16.3 | 110.0 |
| Aug-11 | 4.1 | 10.8 | 16.6 | 111.8 |
| Jul-11 | 4.4 | 11.0 | 16.2 | 116.8 |
| Jun-11 | 4.5 | 10.3 | 14.5 | 113.9 |
| May-11 | 4.3 | 10.3 | 13.6 | 110.5 |
| Apr-11 | 4.2 | 10.4 | 13.0 | 109.6 |
| Mar-11 | 4.0 | 9.4 | 12.5 | 101.2 |
| Feb-11 | 4.1 | 9.4 | 12.0 | 102.1 |
| Jan-11 | 4.5 | 9.6 | 11.5 | 108.0 |
| Dec-10 | 4.2 | 8.7 | 10.8 | 100.3 |
| Nov-10 | 3.7 | 8.6 | 10.8 | 93.4 |
| Oct-10 | 3.4 | 8.3 | 11.1 | 88.6 |
| Sep-10 | 3.9 | 8.3 | 11.0 | 94.2 |
| Aug-10 | 4.3 | 8.5 | 11.3 | 100.1 |
| Jul-10 | 4.6 | 8.0 | 11.3 | 102.1 |
| Jun-10 | 4.8 | 7.7 | 10.5 | 102.1 |
| May-10 | 4.2 | 7.3 | 11.4 | 92.7 |
| Apr-10 | 4.0 | 7.5 | 11.0 | 91.8 |
| Mar-10 | 4.3 | 8.9 | 10.4 | 101.6 |
| Feb-10 | 5.3 | 8.8 | 10.5 | 113.8 |
| Jan-10 | 5.8 | 8.8 | 10.0 | 119.1 |
| Dec-09 | 5.4 | 8.0 | 9.8 | 109.8 |
| Nov-09 | 3.7 | 7.8 | 9.1 | 88.1 |
| Oct-09 | 4.0 | 7.6 | 9.1 | 91.2 |
| Sep-09 | 3.0 | 7.1 | 8.4 | 75.6 |
| Aug-09 | 3.1 | 6.9 | 7.8 | 76.4 |
| Jul-09 | 3.4 | 6.7 | 7.6 | 78.0 |
| Jun-09 | 3.8 | 8.0 | 7.2 | 88.9 |
| May-09 | 3.8 | 8.1 | 7.5 | 89.8 |
| Apr-09 | 3.5 | 8.5 | 8.1 | 88.5 |
| Mar-09 | 4.0 | 10.9 | 9.5 | 106.2 |
| Feb-09 | 4.5 | 11.0 | 10.5 | 114.5 |
| Jan-09 | 5.2 | 13.9 | 12.7 | 138.3 |
| Dec-08 | 5.8 | 15.5 | 13.8 | 153.4 |
| Nov-08 | 6.7 | 15.8 | 15.1 | 166.4 |
| Oct-08 | 6.7 | 15.9 | 15.0 | 167.7 |
| Sep-08 | 7.7 | 14.9 | 14.4 | 173.8 |
| Aug-08 | 8.3 | 14.6 | 13.3 | 178.8 |
| Jul-08 | 11.1 | 14.4 | 12.4 | 212.1 |
| Jun-08 | 12.7 | 12.6 | 12.1 | 222.2 |
| May-08 | 11.2 | 12.4 | 11.6 | 203.1 |
| Apr-08 | 10.1 | 12.2 | 11.4 | 188.7 |
| Mar-08 | 9.4 | 11.0 | 11.0 | 174.1 |
| Feb-08 | 8.6 | 10.8 | 10.5 | 162.4 |
| Jan-08 | 8.0 | 10.7 | 9.9 | 154.7 |
| Dec-07 | 7.1 | 9.5 | 9.2 | 138.2 |
| Nov-07 | 7.1 | 9.5 | 9.1 | 137.9 |
| Oct-07 | 6.8 | 9.2 | 8.6 | 131.9 |
| Sep-07 | 6.1 | 8.5 | 8.1 | 120.1 |
| Aug-07 | 6.2 | 8.3 | 7.7 | 120.1 |
| Jul-07 | 6.2 | 8.1 | 7.3 | 119.1 |
| Jun-07 | 7.3 | 8.0 | 7.1 | 131.7 |
| May-07 | 7.6 | 8.0 | 7.2 | 135.3 |
| Apr-07 | 7.6 | 8.0 | 7.1 | 135.0 |
| Mar-07 | 7.1 | 8.4 | 6.9 | 130.9 |
| Feb-07 | 8.0 | 8.6 | 6.9 | 142.2 |
| Jan-07 | 6.6 | 8.6 | 7.1 | 125.6 |
| Dec-06 | 6.6 | 8.9 | 7.4 | 127.3 |
| Nov-06 | 7.5 | 9.0 | 7.2 | 138.1 |
| Oct-06 | 6.0 | 9.0 | 7.2 | 119.9 |
| Sep-06 | 4.9 | 8.8 | 7.7 | 105.9 |
| Aug-06 | 7.0 | 8.7 | 7.2 | 131.2 |
| Jul-06 | 6.3 | 8.6 | 6.9 | 121.3 |
| Jun-06 | 6.2 | 8.3 | 7.1 | 119.4 |
| May-06 | 6.2 | 8.3 | 6.9 | 119.3 |
| Apr-06 | 7.1 | 8.2 | 6.9 | 130.0 |
| Mar-06 | 6.9 | 8.0 | 6.9 | 126.4 |
| Feb-06 | 7.5 | 8.0 | 7.0 | 133.5 |
| Jan-06 | 8.7 | 8.0 | 6.5 | 147.4 |
| Dec-05 | 12.8 | 7.5 | 6.5 | 195.8 |
| Nov-05 | 10.4 | 7.5 | 6.6 | 166.6 |
| Oct-05 | 13.5 | 7.3 | 6.5 | 203.2 |
| Sep-05 | 12.9 | 6.6 | 6.4 | 192.0 |
| Aug-05 | 9.6 | 6.6 | 6.2 | 152.3 |
| Jul-05 | 7.6 | 6.4 | 6.0 | 127.2 |
| Jun-05 | 7.2 | 5.9 | 5.7 | 119.2 |
| May-05 | 6.5 | 5.9 | 5.7 | 110.4 |
| Apr-05 | 7.2 | 5.9 | 5.7 | 118.6 |
| Mar-05 | 7.0 | 5.5 | 5.6 | 114.6 |
| Feb-05 | 6.1 | 5.5 | 5.6 | 104.5 |
| Jan-05 | 6.2 | 5.5 | 5.4 | 104.4 |
| Dec-04 | 6.6 | 5.0 | 5.6 | 107.5 |
| Nov-04 | 6.1 | 5.0 | 5.5 | 101.2 |
| Oct-04 | 6.4 | 4.8 | 5.6 | 104.6 |
| Sep-04 | 5.1 | 4.4 | 5.4 | 87.0 |
| Aug-04 | 5.4 | 4.3 | 5.2 | 89.6 |
| Jul-04 | 5.9 | 4.3 | 5.1 | 95.8 |
| Jun-04 | 6.3 | 4.0 | 5.0 | 98.6 |
| May-04 | 6.3 | 4.0 | 4.9 | 99.0 |
| Apr-04 | 5.7 | 3.9 | 4.9 | 91.4 |
| Mar-04 | 5.4 | 3.9 | 4.9 | 87.2 |
| Feb-04 | 5.4 | 3.9 | 4.8 | 87.1 |
| Jan-04 | 6.1 | 3.9 | 4.8 | 95.6 |
| Dec-03 | 6.1 | 4.0 | 4.8 | 96.5 |
| Nov-03 | 4.5 | 3.9 | 4.7 | 76.7 |
| Oct-03 | 4.6 | 3.9 | 4.6 | 77.9 |
| Sep-03 | 4.6 | 4.0 | 4.7 | 78.1 |
| Aug-03 | 5.0 | 4.0 | 4.7 | 82.4 |
| Jul-03 | 5.0 | 4.0 | 4.8 | 83.2 |
| Jun-03 | 5.8 | 4.1 | 4.8 | 92.6 |
| May-03 | 5.8 | 4.0 | 4.7 | 93.3 |
| Apr-03 | 5.3 | 4.0 | 4.8 | 86.6 |
| Mar-03 | 5.9 | 3.7 | 4.8 | 93.2 |
| Feb-03 | 7.8 | 3.7 | 4.8 | 115.1 |
| Jan-03 | 5.4 | 3.6 | 4.7 | 86.0 |
| Dec-02 | 4.7 | 3.4 | 4.6 | 76.6 |
| Nov-02 | 4.0 | 3.3 | 4.6 | 68.0 |
| Oct-02 | 4.1 | 3.3 | 4.5 | 68.7 |
| Sep-02 | 3.6 | 3.1 | 4.5 | 61.0 |
| Aug-02 | 3.1 | 3.0 | 4.4 | 54.8 |
| Jul-02 | 3.0 | 3.0 | 4.6 | 53.3 |
| Jun-02 | 3.2 | 2.9 | 4.1 | 55.6 |
| May-02 | 3.5 | 2.8 | 4.0 | 58.6 |
| Apr-02 | 3.4 | 2.8 | 4.0 | 57.6 |
| Mar-02 | 3.0 | 3.0 | 4.0 | 53.6 |
| Feb-02 | 2.3 | 3.0 | 4.1 | 45.2 |
| Jan-02 | 2.3 | 3.1 | 4.2 | 44.7 |
| Dec-01 | 2.4 | 3.4 | 4.3 | 48.3 |
| Nov-01 | 2.4 | 3.5 | 4.4 | 48.1 |
| Oct-01 | 2.5 | 3.5 | 4.6 | 49.6 |
| Sep-01 | 2.2 | 3.8 | 4.5 | 47.2 |
| Aug-01 | 3.0 | 3.8 | 4.5 | 56.9 |
| Jul-01 | 3.1 | 3.8 | 4.7 | 58.6 |
| Jun-01 | 3.7 | 4.3 | 4.7 | 68.8 |
| May-01 | 4.2 | 4.4 | 4.7 | 75.0 |
| Apr-01 | 5.2 | 4.5 | 4.7 | 87.3 |
| Mar-01 | 5.2 | 4.6 | 4.9 | 87.7 |
| Feb-01 | 5.6 | 4.6 | 4.8 | 93.4 |
| Jan-01 | 8.2 | 4.7 | 4.9 | 124.6 |
| Dec-00 | 9.0 | 4.4 | 5.1 | 133.2 |
| Nov-00 | 5.6 | 4.4 | 5.1 | 91.7 |
| Oct-00 | 5.0 | 4.3 | 5.0 | 84.9 |
| Sep-00 | 5.1 | 4.0 | 4.9 | 83.9 |
| Aug-00 | 4.4 | 4.0 | 4.8 | 75.9 |
| Jul-00 | 4.0 | 4.0 | 4.9 | 70.2 |
| Jun-00 | 4.3 | 3.6 | 4.7 | 72.3 |
| May-00 | 3.6 | 3.6 | 4.5 | 63.4 |
| Apr-00 | 3.0 | 3.7 | 4.6 | 57.4 |
| Mar-00 | 2.8 | 3.5 | 4.5 | 53.6 |
| Feb-00 | 2.7 | 3.5 | 4.2 | 51.5 |
| Jan-00 | 2.4 | 3.4 | 4.2 | 48.2 |
| Dec-99 | 2.4 | 2.7 | 3.9 | 44.0 |
| Nov-99 | 2.4 | 2.5 | 3.7 | 43.1 |
| Oct-99 | 2.7 | 2.5 | 3.6 | 47.2 |
| Sep-99 | 2.5 | 2.2 | 3.4 | 43.6 |
| Aug-99 | 2.8 | 2.1 | 3.2 | 45.9 |
| Jul-99 | 2.3 | 2.0 | 3.0 | 39.6 |
| Jun-99 | 2.3 | 1.9 | 2.9 | 39.0 |
| May-99 | 2.3 | 1.9 | 2.9 | 38.3 |
| Apr-99 | 2.2 | 1.9 | 2.8 | 36.9 |
| Mar-99 | 1.8 | 2.0 | 2.8 | 32.9 |
| Feb-99 | 1.8 | 2.0 | 2.8 | 32.9 |
| Jan-99 | 1.9 | 2.0 | 2.8 | 34.1 |
| Dec-98 | 1.7 | 2.1 | 2.7 | 33.1 |
| Nov-98 | 2.1 | 2.2 | 2.8 | 37.6 |
| Oct-98 | 1.9 | 2.2 | 2.8 | 35.1 |
| Sep-98 | 2.0 | 2.3 | 2.7 | 37.3 |
| Aug-98 | 1.9 | 2.4 | 2.8 | 35.6 |
| Jul-98 | 2.2 | 2.4 | 2.8 | 39.7 |
| Jun-98 | 2.2 | 2.5 | 3.0 | 40.3 |
| May-98 | 2.1 | 2.5 | 3.0 | 40.0 |
| Apr-98 | 2.4 | 2.5 | 3.2 | 43.6 |
| Mar-98 | 2.2 | 2.6 | 3.4 | 41.8 |
| Feb-98 | 2.2 | 2.6 | 3.4 | 41.8 |
| Jan-98 | 2.1 | 2.7 | 3.5 | 40.5 |
| Dec-97 | 2.3 | 2.7 | 3.6 | 43.3 |
| Nov-97 | 3.0 | 2.7 | 3.7 | 51.8 |
| Oct-97 | 3.0 | 2.6 | 3.6 | 51.9 |
| Sep-97 | 2.8 | 2.7 | 3.7 | 49.8 |
| Aug-97 | 2.5 | 2.7 | 3.7 | 45.2 |
| Jul-97 | 2.2 | 2.7 | 3.9 | 41.9 |
| Jun-97 | 2.2 | 2.8 | 4.0 | 42.6 |
| May-97 | 2.2 | 2.7 | 4.0 | 43.0 |
| Apr-97 | 2.0 | 2.8 | 4.1 | 40.6 |
| Mar-97 | 1.9 | 2.8 | 4.3 | 39.3 |
| Feb-97 | 2.2 | 2.9 | 4.2 | 43.6 |
| Jan-97 | 3.3 | 2.9 | 4.1 | 56.7 |
| Dec-96 | 3.8 | 3.0 | 4.1 | 63.2 |
| Nov-96 | 3.0 | 3.0 | 4.0 | 53.6 |
| Oct-96 | 2.4 | 2.9 | 3.8 | 45.3 |
| Sep-96 | 1.8 | 2.8 | 3.7 | 38.1 |
| Aug-96 | 2.0 | 2.8 | 3.7 | 40.4 |
| Jul-96 | 2.5 | 2.8 | 3.6 | 45.8 |
| Jun-96 | 2.5 | 2.8 | 3.6 | 46.0 |
| May-96 | 2.2 | 2.8 | 3.6 | 43.0 |
| Apr-96 | 2.2 | 3.1 | 3.6 | 44.2 |
| Mar-96 | 3.0 | 2.7 | 3.5 | 50.9 |
| Feb-96 | 4.4 | 2.8 | 3.5 | 69.0 |
| Jan-96 | 2.9 | 2.8 | 3.4 | 51.0 |
| Dec-95 | 2.7 | 2.7 | 3.4 | 48.2 |
| Nov-95 | 2.0 | 2.8 | 3.4 | 40.2 |
| Oct-95 | 1.8 | 2.8 | 3.5 | 36.9 |
| Sep-95 | 1.6 | 2.8 | 3.5 | 35.5 |
| Aug-95 | 1.6 | 2.8 | 3.5 | 34.6 |
| Jul-95 | 1.4 | 2.8 | 3.5 | 33.2 |
| Jun-95 | 1.6 | 2.7 | 3.6 | 35.1 |
| May-95 | 1.6 | 2.7 | 3.5 | 35.2 |
| Apr-95 | 1.6 | 2.7 | 3.5 | 34.9 |
| Mar-95 | 1.5 | 2.7 | 3.5 | 33.6 |
| Feb-95 | 1.6 | 2.7 | 3.4 | 34.1 |
| Jan-95 | 1.5 | 2.7 | 3.4 | 33.3 |
| Dec-94 | 1.7 | 2.6 | 3.3 | 35.3 |
| Nov-94 | 1.6 | 2.6 | 3.3 | 33.6 |
| Oct-94 | 1.5 | 2.6 | 3.3 | 32.7 |
| Sep-94 | 1.5 | 2.5 | 3.3 | 32.1 |
| Aug-94 | 1.7 | 2.5 | 3.2 | 34.0 |
| Jul-94 | 2.0 | 2.4 | 3.1 | 37.4 |
| Jun-94 | 1.9 | 2.4 | 3.1 | 36.4 |
| May-94 | 1.9 | 2.4 | 3.1 | 36.6 |
| Apr-94 | 2.0 | 2.4 | 3.1 | 38.1 |
| Mar-94 | 2.2 | 2.4 | 3.2 | 40.2 |
| Feb-94 | 2.7 | 2.4 | 3.2 | 46.3 |
| Jan-94 | 2.3 | 2.5 | 3.1 | 42.3 |
| Dec-93 | 2.3 | 2.6 | 3.3 | 43.0 |
| Nov-93 | 2.3 | 2.6 | 3.4 | 42.2 |
| Oct-93 | 2.0 | 2.6 | 3.4 | 39.3 |
| Sep-93 | 2.3 | 2.6 | 3.5 | 42.4 |
| Aug-93 | 2.3 | 2.7 | 3.5 | 42.4 |
| Jul-93 | 2.1 | 2.7 | 3.5 | 40.1 |
| Jun-93 | 2.0 | 2.7 | 3.5 | 39.1 |
| May-93 | 2.2 | 2.7 | 3.6 | 41.5 |
| Apr-93 | 2.4 | 2.7 | 3.6 | 43.7 |
| Mar-93 | 2.2 | 2.8 | 3.6 | 42.0 |
| Feb-93 | 1.7 | 2.7 | 3.6 | 36.0 |
| Jan-93 | 1.9 | 2.8 | 3.6 | 38.4 |
| Dec-92 | 2.2 | 2.6 | 3.7 | 41.3 |
| Nov-92 | 2.2 | 2.6 | 3.7 | 42.2 |
| Oct-92 | 2.4 | 2.6 | 3.7 | 44.4 |
| Sep-92 | 2.3 | 2.6 | 3.6 | 43.0 |
| Aug-92 | 2.0 | 2.6 | 3.6 | 38.6 |
| Jul-92 | 1.8 | 2.6 | 3.6 | 35.8 |
| Jun-92 | 1.6 | 2.5 | 3.5 | 33.2 |
| May-92 | 1.6 | 2.5 | 3.5 | 33.5 |
| Apr-92 | 1.5 | 2.5 | 3.5 | 32.0 |
| Mar-92 | 1.3 | 2.6 | 3.6 | 30.2 |
| Feb-92 | 1.2 | 2.5 | 3.5 | 29.0 |
| Jan-92 | 1.3 | 2.6 | 3.6 | 30.2 |
| Dec-91 | 1.9 | 2.7 | 4.0 | 38.9 |
| Nov-91 | 1.8 | 2.7 | 4.0 | 37.5 |
| Oct-91 | 1.8 | 2.7 | 4.0 | 37.1 |
| Sep-91 | 1.6 | 3.0 | 4.0 | 36.6 |
| Aug-91 | 1.3 | 3.0 | 4.0 | 32.8 |
| Jul-91 | 1.2 | 3.0 | 4.0 | 31.4 |
| Jun-91 | 1.2 | 3.3 | 4.0 | 32.9 |
| May-91 | 1.3 | 3.4 | 4.0 | 34.6 |
| Apr-91 | 1.3 | 3.5 | 4.0 | 35.4 |
| Mar-91 | 1.3 | 3.3 | 4.0 | 34.8 |
| Feb-91 | 1.4 | 3.4 | 4.0 | 35.4 |
| Jan-91 | 1.7 | 3.4 | 4.0 | 39.3 |
| Dec-90 | 2.1 | 2.8 | 3.6 | 41.5 |
| Nov-90 | 2.1 | 2.8 | 3.6 | 41.4 |
| Oct-90 | 1.7 | 2.8 | 3.6 | 36.4 |
| Sep-90 | 1.4 | 2.8 | 3.6 | 33.4 |
| Aug-90 | 1.4 | 2.8 | 3.6 | 32.4 |
| Jul-90 | 1.4 | 2.8 | 3.6 | 33.0 |
| Jun-90 | 1.5 | 2.8 | 3.6 | 33.7 |
| May-90 | 1.5 | 2.8 | 3.6 | 33.7 |
| Apr-90 | 1.5 | 2.8 | 3.6 | 34.0 |
| Mar-90 | 1.6 | 2.8 | 3.6 | 34.7 |
| Feb-90 | 1.9 | 2.8 | 3.6 | 38.9 |
| Jan-90 | 2.4 | 2.8 | 3.6 | 44.9 |
| Dec-89 | 2.2 | 2.1 | 3.3 | 39.4 |
| Nov-89 | 1.9 | 2.1 | 3.3 | 35.2 |
| Oct-89 | 1.6 | 2.1 | 3.3 | 31.6 |
| Sep-89 | 1.5 | 2.1 | 3.3 | 30.7 |
| Aug-89 | 1.6 | 2.1 | 3.3 | 31.3 |
| Jul-89 | 1.6 | 2.1 | 3.3 | 32.1 |
| Jun-89 | 1.7 | 2.1 | 3.3 | 32.8 |
| May-89 | 1.7 | 2.1 | 3.3 | 32.3 |
| Apr-89 | 1.5 | 2.1 | 3.3 | 30.7 |
| Mar-89 | 1.5 | 2.1 | 3.3 | 30.3 |
| Feb-89 | 1.7 | 2.1 | 3.3 | 32.9 |
| Jan-89 | 1.8 | 2.1 | 3.3 | 33.8 |
| Dec-88 | 1.9 | 2.4 | 3.3 | 36.4 |
| Nov-88 | 1.8 | 2.4 | 3.3 | 34.9 |
| Oct-88 | 1.7 | 2.4 | 3.3 | 33.9 |
| Sep-88 | 1.5 | 2.4 | 3.3 | 32.1 |
| Aug-88 | 1.6 | 2.4 | 3.3 | 33.2 |
| Jul-88 | 1.6 | 2.4 | 3.3 | 32.4 |
| Jun-88 | 1.5 | 2.4 | 3.3 | 32.1 |
| May-88 | 1.5 | 2.4 | 3.3 | 31.9 |
| Apr-88 | 1.6 | 2.4 | 3.3 | 32.8 |
| Mar-88 | 1.7 | 2.4 | 3.3 | 34.1 |
| Feb-88 | 1.8 | 2.4 | 3.3 | 35.8 |
| Jan-88 | 2.0 | 2.4 | 3.3 | 37.3 |
| Dec-87 | 1.7 | 2.6 | 3.4 | 35.2 |
| Nov-87 | 1.6 | 2.6 | 3.4 | 34.5 |
| Oct-87 | 1.6 | 2.6 | 3.4 | 33.6 |
| Sep-87 | 1.6 | 2.6 | 3.4 | 33.5 |
| Aug-87 | 1.6 | 2.6 | 3.4 | 34.4 |
| Jul-87 | 1.7 | 2.6 | 3.4 | 34.7 |
| Jun-87 | 1.7 | 2.6 | 3.4 | 34.6 |
| May-87 | 1.7 | 2.6 | 3.4 | 34.6 |
| Apr-87 | 1.7 | 2.6 | 3.4 | 35.1 |
| Mar-87 | 1.7 | 2.6 | 3.4 | 35.6 |
| Feb-87 | 1.7 | 2.6 | 3.4 | 35.6 |
| Jan-87 | 1.7 | 2.6 | 3.4 | 35.7 |
| Dec-86 | 1.8 | 3.7 | 4.1 | 41.5 |
| Nov-86 | 1.8 | 3.7 | 4.1 | 41.6 |
| Oct-86 | 1.7 | 3.7 | 4.1 | 41.1 |
| Sep-86 | 1.8 | 3.7 | 4.1 | 41.7 |
| Aug-86 | 1.8 | 3.7 | 4.1 | 41.6 |
| Jul-86 | 1.8 | 3.7 | 4.1 | 42.0 |
| Jun-86 | 1.9 | 3.7 | 4.1 | 42.6 |
| May-86 | 2.0 | 3.7 | 4.1 | 43.9 |
| Apr-86 | 2.1 | 3.7 | 4.1 | 45.6 |
| Mar-86 | 2.2 | 3.7 | 4.1 | 46.4 |
| Feb-86 | 2.3 | 3.7 | 4.1 | 47.6 |
| Jan-86 | 2.3 | 3.7 | 4.1 | 47.8 |
| Dec-85 | 2.3 | 3.7 | 5.2 | 48.6 |
| Nov-85 | 2.4 | 3.7 | 5.2 | 49.6 |
| Oct-85 | 2.4 | 3.7 | 5.2 | 49.7 |
| Sep-85 | 2.4 | 3.7 | 5.2 | 50.3 |
| Aug-85 | 2.5 | 3.7 | 5.2 | 50.9 |
| Jul-85 | 2.5 | 3.7 | 5.2 | 51.4 |
| Jun-85 | 2.6 | 3.7 | 5.2 | 52.2 |
| May-85 | 2.5 | 3.7 | 5.2 | 51.6 |
| Apr-85 | 2.6 | 3.7 | 5.2 | 53.0 |
| Mar-85 | 2.6 | 3.7 | 5.2 | 52.7 |
| Feb-85 | 2.7 | 3.7 | 5.2 | 53.8 |
| Jan-85 | 2.6 | 3.7 | 5.2 | 53.0 |
| Dec-84 | 2.6 | 3.8 | 5.2 | 52.6 |
| Nov-84 | 2.6 | 3.8 | 5.2 | 53.1 |
| Oct-84 | 2.6 | 3.8 | 5.2 | 53.4 |
| Sep-84 | 2.6 | 3.8 | 5.2 | 53.2 |
| Aug-84 | 2.7 | 3.8 | 5.2 | 54.1 |
| Jul-84 | 2.7 | 3.8 | 5.2 | 54.0 |
| Jun-84 | 2.7 | 3.8 | 5.2 | 54.2 |
| May-84 | 2.7 | 3.8 | 5.2 | 53.8 |
| Apr-84 | 2.6 | 3.8 | 5.2 | 53.5 |
| Mar-84 | 2.7 | 3.8 | 5.2 | 53.8 |
| Feb-84 | 2.7 | 3.8 | 5.2 | 54.3 |
| Jan-84 | 2.7 | 3.8 | 5.2 | 53.8 |
| Dec-83 | 2.6 | 4.1 | 5.5 | 54.7 |
| Nov-83 | 2.6 | 4.1 | 5.5 | 54.6 |
| Oct-83 | 2.6 | 4.1 | 5.5 | 54.3 |
| Sep-83 | 2.7 | 4.1 | 5.5 | 55.4 |
| Aug-83 | 2.6 | 4.1 | 5.5 | 54.3 |
| Jul-83 | 2.5 | 4.1 | 5.5 | 53.6 |
| Jun-83 | 2.6 | 4.1 | 5.5 | 54.5 |
| May-83 | 2.5 | 4.1 | 5.5 | 53.7 |
| Apr-83 | 2.5 | 4.1 | 5.5 | 53.7 |
| Mar-83 | 2.6 | 4.1 | 5.5 | 54.3 |
| Feb-83 | 2.7 | 4.1 | 5.5 | 55.3 |
| Jan-83 | 2.7 | 4.1 | 5.5 | 55.3 |
| Dec-82 | 2.6 | 4.5 | 6.1 | 57.1 |
| Nov-82 | 2.6 | 4.5 | 6.1 | 57.1 |
| Oct-82 | 2.6 | 4.5 | 6.1 | 56.8 |
| Sep-82 | 2.6 | 4.5 | 6.1 | 56.3 |
| Aug-82 | 2.5 | 4.5 | 6.1 | 56.0 |
| Jul-82 | 2.5 | 4.5 | 6.1 | 55.2 |
| Jun-82 | 2.5 | 4.5 | 6.1 | 55.0 |
| May-82 | 2.5 | 4.5 | 6.1 | 55.0 |
| Apr-82 | 2.4 | 4.5 | 6.1 | 54.4 |
| Mar-82 | 2.4 | 4.5 | 6.1 | 53.8 |
| Feb-82 | 2.3 | 4.5 | 6.1 | 53.2 |
| Jan-82 | 2.2 | 4.5 | 6.1 | 52.3 |
| Dec-81 | 2.2 | 4.6 | 6.0 | 52.2 |
| Nov-81 | 2.2 | 4.6 | 6.0 | 52.1 |
| Oct-81 | 2.1 | 4.6 | 6.0 | 51.6 |
| Sep-81 | 2.1 | 4.6 | 6.0 | 51.2 |
| Aug-81 | 2.0 | 4.6 | 6.0 | 50.5 |
| Jul-81 | 2.0 | 4.6 | 6.0 | 50.4 |
| Jun-81 | 2.0 | 4.6 | 6.0 | 49.6 |
| May-81 | 2.0 | 4.6 | 6.0 | 49.6 |
| Apr-81 | 1.9 | 4.6 | 6.0 | 49.4 |
| Mar-81 | 1.9 | 4.6 | 6.0 | 48.5 |
| Feb-81 | 1.8 | 4.6 | 6.0 | 47.9 |
| Jan-81 | 1.8 | 4.6 | 6.0 | 47.4 |
| Dec-80 | 1.7 | 4.2 | 5.7 | 45.1 |
| Nov-80 | 1.8 | 4.2 | 5.7 | 45.3 |
| Oct-80 | 1.7 | 4.2 | 5.7 | 44.7 |
| Sep-80 | 1.7 | 4.2 | 5.7 | 44.4 |
| Aug-80 | 1.6 | 4.2 | 5.7 | 43.8 |
| Jul-80 | 1.6 | 4.2 | 5.7 | 43.8 |
| Jun-80 | 1.6 | 4.2 | 5.7 | 43.0 |
| May-80 | 1.6 | 4.2 | 5.7 | 42.9 |
| Apr-80 | 1.5 | 4.2 | 5.7 | 42.3 |
| Mar-80 | 1.5 | 4.2 | 5.7 | 41.7 |
| Feb-80 | 1.4 | 4.2 | 5.7 | 41.2 |
| Jan-80 | 1.4 | 4.2 | 5.7 | 40.6 |
| Dec-79 | 1.3 | 3.3 | 3.7 | 33.9 |
| Nov-79 | 1.3 | 3.3 | 3.7 | 33.7 |
| Oct-79 | 1.3 | 3.3 | 3.7 | 33.5 |
| Sep-79 | 1.2 | 3.3 | 3.7 | 33.1 |
| Aug-79 | 1.2 | 3.3 | 3.7 | 33.1 |
| Jul-79 | 1.2 | 3.3 | 3.7 | 32.6 |
| Jun-79 | 1.2 | 3.3 | 3.7 | 32.2 |
| May-79 | 1.2 | 3.3 | 3.7 | 32.0 |
| Apr-79 | 1.1 | 3.3 | 3.7 | 31.5 |
| Mar-79 | 1.1 | 3.3 | 3.7 | 31.4 |
| Feb-79 | 1.1 | 3.3 | 3.7 | 30.7 |
| Jan-79 | 1.0 | 3.3 | 3.7 | 30.4 |
| Dec-78 | 1.0 | 2.3 | 3.0 | 24.7 |
| Nov-78 | 0.9 | 2.3 | 3.0 | 24.3 |
| Oct-78 | 0.9 | 2.3 | 3.0 | 24.2 |
| Sep-78 | 0.9 | 2.3 | 3.0 | 24.2 |
| Aug-78 | 0.9 | 2.3 | 3.0 | 24.1 |
| Jul-78 | 0.9 | 2.3 | 3.0 | 23.8 |
| Jun-78 | 0.9 | 2.3 | 3.0 | 24.1 |
| May-78 | 0.9 | 2.3 | 3.0 | 24.1 |
| Apr-78 | 0.9 | 2.3 | 3.0 | 23.7 |
| Mar-78 | 0.9 | 2.3 | 3.0 | 23.8 |
| Feb-78 | 0.9 | 2.3 | 3.0 | 23.7 |
| Jan-78 | 0.9 | 2.3 | 3.0 | 23.6 |
| Dec-77 | 0.8 | 1.8 | 2.8 | 20.6 |
| Nov-77 | 0.8 | 1.8 | 2.8 | 20.5 |
| Oct-77 | 0.8 | 1.8 | 2.8 | 20.6 |
| Sep-77 | 0.8 | 1.8 | 2.8 | 20.5 |
| Aug-77 | 0.8 | 1.8 | 2.8 | 20.4 |
| Jul-77 | 0.8 | 1.8 | 2.8 | 20.5 |
| Jun-77 | 0.8 | 1.8 | 2.8 | 20.4 |
| May-77 | 0.8 | 1.8 | 2.8 | 19.7 |
| Apr-77 | 0.8 | 1.8 | 2.8 | 19.7 |
| Mar-77 | 0.8 | 1.8 | 2.8 | 19.5 |
| Feb-77 | 0.7 | 1.8 | 2.8 | 19.0 |
| Jan-77 | 0.7 | 1.8 | 2.8 | 18.5 |
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