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Loading...
| year | production | consumption |
| 1980 | .00 | .00 |
| 1981 | .00 | .00 |
| 1982 | .00 | .00 |
| 1983 | .00 | .00 |
| 1984 | .00 | .00 |
| 1985 | .00 | .00 |
| 1986 | .00 | .00 |
| 1987 | .00 | .00 |
| 1988 | .00 | .00 |
| 1989 | .00 | .00 |
| 1990 | .00 | .00 |
| 1991 | .00 | .00 |
| 1992 | .01 | .01 |
| 1993 | .03 | .03 |
| 1994 | .03 | .03 |
| 1995 | .03 | .03 |
| 1996 | .04 | .04 |
| 1997 | .12 | .12 |
| 1998 | .24 | .24 |
| 1999 | .26 | .26 |
| 2000 | .32 | .32 |
| 2001 | .41 | .41 |
| 2002 | .45 | .45 |
| 2003 | .51 | .51 |
| 2004 | .73 | .73 |
| 2005 | 1.18 | 1.18 |
| 2006 | 1.66 | 1.66 |
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