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Loading...
| year | production | consumption |
| 1980 | .00 | 202.00 |
| 1981 | .00 | 214.00 |
| 1982 | .00 | 222.00 |
| 1983 | .00 | 220.00 |
| 1984 | .00 | 235.00 |
| 1985 | .00 | 227.00 |
| 1986 | .00 | 257.00 |
| 1987 | .00 | 285.00 |
| 1988 | .00 | 304.00 |
| 1989 | .00 | 329.00 |
| 1990 | .00 | 363.00 |
| 1991 | .00 | 389.00 |
| 1992 | .00 | 420.00 |
| 1993 | .00 | 469.00 |
| 1994 | .00 | 503.00 |
| 1995 | .00 | 512.00 |
| 1996 | .00 | 586.00 |
| 1997 | .00 | 630.00 |
| 1998 | .00 | 650.00 |
| 1999 | .00 | 673.00 |
| 2000 | .00 | 717.00 |
| 2001 | .00 | 744.00 |
| 2002 | .00 | 745.00 |
| 2003 | .00 | 743.00 |
| 2004 | .00 | 809.00 |
| 2005 | .00 | 869.00 |
| 2006 | .00 | 963.00 |
| 2007 | .00 | 1,012.00 |
| 2008 | .00 | 1,003.00 |
| 2009 | .00 | 1,024.00 |
| 2010 | .00 | 1,149.00 |
| 2011 | .00 | 1,216.00 |
| 2012 | .00 | 1,224.00 |
| 2013 | .00 | 1,240.00 |
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