|
| year | production | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | .50 | NA |
| 1988 | .50 | 0.00 % |
| 1989 | .22 | -57.00 % |
| 1990 | .33 | 52.09 % |
| 1991 | .30 | -8.26 % |
| 1992 | .05 | -83.33 % |
| 1993 | .03 | -38.00 % |
| 1994 | .02 | -19.39 % |
| 1995 | .03 | 20.05 % |
| 1996 | .03 | 3.33 % |
| 1997 | .04 | 29.03 % |
| 1998 | .03 | -22.50 % |
| 1999 | .04 | 29.03 % |
| 2000 | .04 | 0.00 % |
| 2001 | .04 | 0.00 % |
| 2002 | .02 | -50.00 % |
| 2003 | .02 | 0.00 % |
| 2004 | .02 | 0.00 % |
| 2005 | .02 | 0.00 % |
| 2006 | .02 | 0.00 % |
| 2007 | .02 | 0.00 % |
| 2008 | .02 | 0.00 % |
| 2009 | .02 | 0.00 % |
| 2010 | .02 | 0.00 % |
| 2011 | .02 | 0.00 % |
| 2012 | .02 | 0.00 % |
|
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