年 |
1978 |
1979 |
1980 |
1981 |
1982 |
1月 |
1,819,000 |
1,890,000 |
2,324,000 |
2,152,000 |
2,182,000 |
2月 |
1,310,000 |
1,349,000 |
1,852,000 |
1,824,000 |
1,787,000 |
3月 |
1,123,000 |
1,236,000 |
1,594,000 |
1,631,000 |
1,604,000 |
4月 |
1,231,000 |
1,335,000 |
1,691,000 |
1,764,000 |
1,676,000 |
5月 |
1,491,000 |
1,619,000 |
1,998,000 |
1,977,000 |
2,034,000 |
6月 |
1,836,000 |
1,950,000 |
2,299,000 |
2,252,000 |
2,369,000 |
7月 |
2,164,000 |
2,284,000 |
2,587,000 |
2,558,000 |
2,704,000 |
8月 |
2,501,000 |
2,628,000 |
2,854,000 |
2,882,000 |
2,998,000 |
9月 |
2,813,000 |
2,920,000 |
3,099,000 |
3,152,000 |
3,251,000 |
10月 |
2,958,000 |
3,079,000 |
3,187,000 |
3,248,000 |
3,364,000 |
11月 |
2,927,000 |
3,045,000 |
3,026,000 |
3,201,000 |
3,309,000 |
12月 |
2,547,000 |
2,753,000 |
2,655,000 |
2,817,000 |
3,071,000 |
| 单位：百万立方英尺 |
