|
| year | production | change |
| 1980 | 1709 | NA |
| 1981 | 1474 | -13.75 % |
| 1982 | 1250 | -15.20 % |
| 1983 | 1149 | -8.08 % |
| 1984 | 1146 | -0.26 % |
| 1985 | 1193 | 4.10 % |
| 1986 | 1330 | 11.48 % |
| 1987 | 1541 | 15.86 % |
| 1988 | 1565 | 1.56 % |
| 1989 | 1860 | 18.85 % |
| 1990 | 2117 | 13.82 % |
| 1991 | 2386 | 12.71 % |
| 1992 | 2266 | -5.03 % |
| 1993 | 2159 | -4.72 % |
| 1994 | 2193 | 1.57 % |
| 1995 | 2233 | 1.82 % |
| 1996 | 2277.65 | 2.00 % |
| 1997 | 2316.42 | 1.70 % |
| 1998 | 2345.3 | 1.25 % |
| 1999 | 2169 | -7.52 % |
| 2000 | 2367.83 | 9.17 % |
| 2001 | 2205 | -6.88 % |
| 2002 | 2081.99 | -5.58 % |
| 2003 | 2348.14 | 12.78 % |
| 2004 | 2478.26 | 5.54 % |
| 2005 | 2535.42 | 2.31 % |
| 2006 | 2635.7 | 3.96 % |
Source: United States Energy Information Administration
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