|
| year | production | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 3.53 | NA |
| 1993 | | NA |
| 1994 | 1.17 | NA |
| 1995 | 1.38 | 17.95 % |
| 1996 | .99 | -28.26 % |
| 1997 | 1.41 | 42.69 % |
| 1998 | 2.12 | 50.00 % |
| 1999 | 2.12 | 0.00 % |
| 2000 | 1.41 | -33.33 % |
| 2001 | 1.77 | 25.00 % |
| 2002 | .71 | -60.00 % |
| 2003 | 1.41 | 100.00 % |
| 2004 | 1.38 | -2.50 % |
| 2005 | 1.45 | 5.13 % |
| 2006 | 1.27 | -12.20 % |
| 2007 | .71 | -44.44 % |
| 2008 | 1.06 | 50.00 % |
| 2009 | 1.34 | 26.67 % |
| 2010 | 1.45 | 7.90 % |
| 2011 | .67 | -53.66 % |
|
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