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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 | 247.00 |
| 1986 | .00 | 31.00 |
| 1987 | .00 | 256.00 |
| 1988 | .00 | 107.00 |
| 1989 | .00 | 11.00 |
| 1990 | .00 | 19.00 |
| 1991 | .00 | 214.00 |
| 1992 | .00 | 203.00 |
| 1993 | .00 | 237.00 |
| 1994 | .00 | 67.00 |
| 1995 | .00 | 88.00 |
| 1996 | .00 | 115.00 |
| 1997 | .00 | 117.00 |
| 1998 | .00 | 165.00 |
| 1999 | .00 | 5.50 |
| 2000 | .00 | 103.00 |
| 2001 | .00 | 224.00 |
| 2002 | .00 | 257.00 |
| 2003 | .00 | 422.00 |
| 2004 | .00 | 475.00 |
| 2005 | .00 | 525.00 |
| 2006 | .00 | 776.00 |
| 2007 | .00 | 802.00 |
| 2008 | .00 | 811.00 |
| 2009 | .00 | 795.00 |
| 2010 | .00 | 740.00 |
| 2011 | .00 | 1,069.00 |
| 2012 | .00 | 961.00 |
| 2013 | .00 | 924.00 |
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