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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 | .00 | .00 |
| 1993 | .00 | .00 |
| 1994 | .01 | .01 |
| 1995 | .24 | .24 |
| 1996 | .39 | .39 |
| 1997 | .39 | .39 |
| 1998 | .38 | .38 |
| 1999 | .38 | .38 |
| 2000 | .40 | .40 |
| 2001 | .34 | .34 |
| 2002 | .77 | .77 |
| 2003 | .27 | .27 |
| 2004 | .41 | .41 |
| 2005 | .42 | .42 |
| 2006 | .59 | .59 |
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