|
| year | production | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | .01 | NA |
| 1984 | .02 | 75.56 % |
| 1985 | .02 | 13.99 % |
| 1986 | .02 | 0.00 % |
| 1987 | .02 | -12.49 % |
| 1988 | .01 | -28.36 % |
| 1989 | .01 | -20.20 % |
| 1990 | .01 | 0.00 % |
| 1991 | .01 | 0.00 % |
| 1992 | .01 | 40.25 % |
| 1993 | .01 | 2.94 % |
| 1994 | .01 | 2.63 % |
| 1995 | .01 | -49.36 % |
| 1996 | .00 | -32.99 % |
| 1997 | .00 | -33.92 % |
| 1998 | .00 | -24.16 % |
| 1999 | .00 | 0.00 % |
| 2000 | .00 | -30.53 % |
| 2001 | .00 | 1.27 % |
| 2002 | .00 | 13.84 % |
| 2003 | .00 | -49.17 % |
| 2004 | .00 | -98.91 % |
| 2005 | .00 | 0.00 % |
| 2006 | .00 | 400.00 % |
| 2007 | .00 | -20.00 % |
| 2008 | .00 | 0.00 % |
| 2009 | .00 | -50.00 % |
| 2010 | .00 | 0.00 % |
|
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