|
| year | production | consumption |
| 1980 | 1.07 | 1.07 |
| 1981 | 1.14 | 1.14 |
| 1982 | 1.19 | 1.19 |
| 1983 | 1.16 | 1.16 |
| 1984 | 1.18 | 1.18 |
| 1985 | 1.15 | 1.15 |
| 1986 | 1.13 | 1.13 |
| 1987 | 1.12 | 1.12 |
| 1988 | 1.25 | 1.25 |
| 1989 | 1.24 | 1.24 |
| 1990 | 1.24 | 1.24 |
| 1991 | 1.37 | 1.37 |
| 1992 | 1.34 | 1.34 |
| 1993 | 1.36 | 1.36 |
| 1994 | 1.34 | 1.34 |
| 1995 | 1.27 | 1.27 |
| 1996 | 1.45 | 1.45 |
| 1997 | 1.56 | 1.56 |
| 1998 | 1.5 | 1.5 |
| 1999 | 1.78 | 1.78 |
| 2000 | 1.95 | 1.95 |
| 2001 | 2.15 | 2.15 |
| 2002 | 2.2 | 2.2 |
| 2003 | 1.99 | 1.99 |
| 2004 | 2.15 | 2.15 |
| 2005 | 1.96 | 1.96 |
| 2006 | 2.14 | 2.14 |
Source: United States Energy Information Administration
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