|
| year | production | change |
| 1980 | 282 | NA |
| 1981 | 319 | 13.12 % |
| 1982 | 324 | 1.57 % |
| 1983 | 375 | 15.74 % |
| 1984 | 414 | 10.40 % |
| 1985 | 498 | 20.29 % |
| 1986 | 560 | 12.45 % |
| 1987 | 582 | 3.93 % |
| 1988 | 617 | 6.01 % |
| 1989 | 641 | 3.89 % |
| 1990 | 685 | 6.86 % |
| 1991 | 700 | 2.19 % |
| 1992 | 740 | 5.71 % |
| 1993 | 775.83 | 4.84 % |
| 1994 | 810 | 4.40 % |
| 1995 | 851.29 | 5.10 % |
| 1996 | 883.39 | 3.77 % |
| 1997 | 904 | 2.33 % |
| 1998 | 899.84 | -0.46 % |
| 1999 | 910 | 1.13 % |
| 2000 | 970 | 6.59 % |
| 2001 | 913 | -5.88 % |
| 2002 | 896.72 | -1.78 % |
| 2003 | 819 | -8.67 % |
| 2004 | 750.96 | -8.31 % |
| 2005 | 774.3 | 3.11 % |
| 2006 | 737.65 | -4.73 % |
Source: United States Energy Information Administration
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