年 |
2006 |
2007 |
2008 |
2009 |
2010 |
2011 |
1月 |
318,364 |
448,149 |
531,460 |
487,426 |
545,811 |
542,216 |
2月 |
346,138 |
425,485 |
438,868 |
453,472 |
479,615 |
482,223 |
3月 |
406,970 |
416,015 |
460,763 |
499,678 |
456,864 |
482,693 |
4月 |
426,027 |
453,144 |
469,607 |
451,395 |
471,481 |
525,956 |
5月 |
504,409 |
507,089 |
475,467 |
515,476 |
559,665 |
577,755 |
6月 |
629,660 |
628,467 |
665,436 |
642,797 |
705,665 |
704,996 |
7月 |
863,531 |
760,521 |
782,039 |
778,017 |
897,182 |
942,201 |
8月 |
840,197 |
969,433 |
762,946 |
840,317 |
943,002 |
923,427 |
9月 |
548,321 |
683,327 |
602,565 |
690,011 |
696,723 |
686,445 |
10月 |
527,532 |
604,092 |
545,244 |
537,013 |
570,363 |
578,479 |
11月 |
396,586 |
448,180 |
457,591 |
457,085 |
496,539 |
562,960 |
12月 |
414,365 |
497,505 |
476,394 |
519,846 |
564,274 |
|
| 单位：百万立方英尺 |
