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Loading...
| year | production | consumption |
| 1980 | 228.00 | 317.00 |
| 1981 | 364.00 | 324.00 |
| 1982 | 222.00 | 268.00 |
| 1983 | 64.00 | 200.00 |
| 1984 | 44.00 | 138.00 |
| 1985 | 39.00 | 117.00 |
| 1986 | 4.40 | 73.00 |
| 1987 | 47.00 | 69.00 |
| 1988 | 50.00 | 72.00 |
| 1989 | 55.00 | 79.00 |
| 1990 | 44.00 | 64.00 |
| 1991 | 46.00 | 68.00 |
| 1992 | 44.00 | 66.00 |
| 1993 | 44.00 | 66.00 |
| 1994 | 44.00 | 66.00 |
| 1995 | 42.00 | 62.00 |
| 1996 | 22.00 | .00 |
| 1997 | 20.00 | .00 |
| 1998 | 20.00 | .00 |
| 1999 | 19.00 | .00 |
| 2000 | 18.00 | .00 |
| 2001 | 31.00 | .00 |
| 2002 | 49.00 | .00 |
| 2003 | 41.00 | .00 |
| 2004 | 19.00 | .00 |
| 2005 | 3.30 | .00 |
| 2006 | 45.00 | .00 |
| 2007 | 26.00 | 9.90 |
| 2008 | 42.00 | 11.00 |
| 2009 | 29.00 | 11.00 |
| 2010 | 39.00 | 8.00 |
| 2011 | 680.00 | 57.00 |
| 2012 | 4,993.00 | 18.00 |
| 2013 | 6,702.00 | .00 |
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