|
| year | production | change |
| 1980 | .00 | NA |
| 1981 | .00 | 7.84 % |
| 1982 | .00 | 3.64 % |
| 1983 | .00 | -26.32 % |
| 1984 | .00 | -26.19 % |
| 1985 | .00 | 19.35 % |
| 1986 | .00 | 13.51 % |
| 1987 | .00 | 11.90 % |
| 1988 | .00 | 10.64 % |
| 1989 | .00 | 7.69 % |
| 1990 | .00 | 14.29 % |
| 1991 | .00 | 4.69 % |
| 1992 | .00 | 2.99 % |
| 1993 | .00 | 2.90 % |
| 1994 | .00 | 2.82 % |
| 1995 | .00 | 2.74 % |
| 1996 | .00 | 6.67 % |
| 1997 | .00 | -27.50 % |
| 1998 | .00 | -12.07 % |
| 1999 | .00 | -11.76 % |
| 2000 | .00 | 6.67 % |
| 2001 | .00 | -33.33 % |
| 2002 | .00 | -3.12 % |
| 2003 | .00 | 61.29 % |
| 2004 | .00 | -16.00 % |
| 2005 | .00 | 40.48 % |
| 2006 | .00 | 8.47 % |
| 2007 | .00 | 0.00 % |
| 2008 | .00 | -4.69 % |
| 2009 | .00 | -6.56 % |
| 2010 | .00 | -15.79 % |
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