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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 | 2.50 |
| 1987 | .00 | 75.00 |
| 1988 | .00 | 97.00 |
| 1989 | .00 | 93.00 |
| 1990 | .00 | 106.00 |
| 1991 | .00 | 127.00 |
| 1992 | .00 | 158.00 |
| 1993 | .00 | 205.00 |
| 1994 | .00 | 273.00 |
| 1995 | .00 | 326.00 |
| 1996 | .00 | 443.00 |
| 1997 | .00 | 536.00 |
| 1998 | .00 | 489.00 |
| 1999 | .00 | 598.00 |
| 2000 | .00 | 671.00 |
| 2001 | .00 | 745.00 |
| 2002 | .00 | 822.00 |
| 2003 | .00 | 896.00 |
| 2004 | .00 | 1,022.00 |
| 2005 | 17.00 | 1,076.00 |
| 2006 | 18.00 | 1,137.00 |
| 2007 | 15.00 | 1,231.00 |
| 2008 | 16.00 | 1,265.00 |
| 2009 | 27.00 | 1,215.00 |
| 2010 | 33.00 | 1,524.00 |
| 2011 | 36.00 | 1,641.00 |
| 2012 | 37.00 | 1,774.00 |
| 2013 | 18.00 | 1,856.00 |
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