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Loading...
| year | production | consumption |
| 1980 | .00 | .00 |
| 1981 | .00 | .00 |
| 1982 | .00 | .00 |
| 1983 | .00 | .00 |
| 1984 | .00 | .00 |
| 1985 | .01 | .01 |
| 1986 | .05 | .05 |
| 1987 | .04 | .04 |
| 1988 | .05 | .05 |
| 1989 | .05 | .05 |
| 1990 | .29 | .29 |
| 1991 | .26 | .26 |
| 1992 | .28 | .28 |
| 1993 | .32 | .32 |
| 1994 | .34 | .34 |
| 1995 | .35 | .35 |
| 1996 | .37 | .37 |
| 1997 | .31 | .31 |
| 1998 | .34 | .34 |
| 1999 | .37 | .37 |
| 2000 | .32 | .32 |
| 2001 | .40 | .40 |
| 2002 | .40 | .40 |
| 2003 | .65 | .65 |
| 2004 | .70 | .70 |
| 2005 | .89 | .89 |
| 2006 | 1.11 | 1.11 |
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