|
| 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 | 1.41 | -60.06 % |
| 1994 | 1.24 | -12.06 % |
| 1995 | 1.23 | -0.81 % |
| 1996 | .85 | -30.89 % |
| 1997 | .64 | -25.22 % |
| 1998 | .49 | -22.22 % |
| 1999 | .35 | -28.57 % |
| 2000 | .46 | 30.00 % |
| 2001 | .57 | 23.08 % |
| 2002 | .35 | -37.50 % |
| 2003 | .95 | 170.00 % |
| 2004 | 1.02 | 7.41 % |
| 2005 | 1.06 | 3.45 % |
| 2006 | .92 | -13.33 % |
| 2007 | .65 | -29.23 % |
| 2008 | 1.06 | 63.04 % |
| 2009 | .54 | -48.67 % |
| 2010 | .44 | -18.83 % |
| 2011 | .35 | -20.00 % |
|
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