|
| year | production | consumption |
| 1980 | 60.00 | |
| 1981 | 79.00 | |
| 1982 | 81.20 | |
| 1983 | 84.80 | |
| 1984 | 85.00 | |
| 1985 | 105.00 | |
| 1986 | 105.00 | |
| 1987 | 99.20 | 21.54 |
| 1988 | 105.95 | 69.92 |
| 1989 | 104.49 | 68.28 |
| 1990 | 104.00 | 67.00 |
| 1991 | 11.00 | 11.00 |
| 1992 | 10.59 | 10.59 |
| 1993 | 10.59 | 10.59 |
| 1994 | 10.59 | 10.59 |
| 1995 | 7.06 | 7.06 |
| 1996 | 8.12 | 8.12 |
| 1997 | 8.12 | 8.12 |
| 1998 | 8.12 | 8.12 |
| 1999 | 8.12 | 8.12 |
| 2000 | 8.12 | 8.12 |
| 2001 | 1.77 | 1.77 |
| 2002 | 1.77 | 1.77 |
| 2003 | .71 | .71 |
| 2004 | .71 | .71 |
| 2005 | .71 | .71 |
| 2006 | .71 | .71 |
| 2007 | 1.41 | 1.41 |
| 2008 | 1.77 | 1.77 |
| 2009 | 1.06 | 1.06 |
| 2010 | 4.94 | 4.94 |
| 2011 | 4.94 | 4.94 |
|
|
