|
| year | production | change |
| 1980 | 6 | NA |
| 1981 | 15 | 150.00 % |
| 1982 | 35 | 133.33 % |
| 1983 | 45 | 28.57 % |
| 1984 | 46 | 2.22 % |
| 1985 | 58 | 26.09 % |
| 1986 | 76 | 31.03 % |
| 1987 | 97 | 27.63 % |
| 1988 | 99 | 2.06 % |
| 1989 | 117 | 18.18 % |
| 1990 | 121 | 3.42 % |
| 1991 | 142.89 | 18.09 % |
| 1992 | 162.92 | 14.02 % |
| 1993 | 174.11 | 6.87 % |
| 1994 | 184.98 | 6.24 % |
| 1995 | 186.08 | 0.59 % |
| 1996 | 207.92 | 11.74 % |
| 1997 | 230.48 | 10.85 % |
| 1998 | 238.35 | 3.41 % |
| 1999 | 300.2 | 25.95 % |
| 2000 | 362.93 | 20.90 % |
| 2001 | 346.2 | -4.61 % |
| 2002 | 370.76 | 7.09 % |
| 2003 | 375.05 | 1.16 % |
| 2004 | 389.15 | 3.76 % |
| 2005 | 377.15 | -3.08 % |
| 2006 | 342 | -9.32 % |
Source: United States Energy Information Administration
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