|
| year | production | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .48 | NA |
| 1987 | .40 | -16.49 % |
| 1988 | .42 | 3.75 % |
| 1989 | .30 | -27.71 % |
| 1990 | .31 | 4.00 % |
| 1991 | .30 | -3.85 % |
| 1992 | .23 | -24.00 % |
| 1993 | .21 | -8.48 % |
| 1994 | .20 | -4.15 % |
| 1995 | .30 | 50.00 % |
| 1996 | .30 | 0.00 % |
| 1997 | .08 | -73.33 % |
| 1998 | .10 | 25.00 % |
| 1999 | .22 | 120.00 % |
| 2000 | .30 | 36.36 % |
| 2001 | .40 | 33.33 % |
| 2002 | .26 | -35.00 % |
| 2003 | .20 | -23.08 % |
| 2004 | .20 | 0.00 % |
| 2005 | .50 | 150.00 % |
| 2006 | .50 | 0.00 % |
| 2007 | .50 | 0.00 % |
| 2008 | .50 | 0.00 % |
| 2009 | .50 | 0.00 % |
| 2010 | .50 | 0.00 % |
| 2011 | .50 | 0.00 % |
| 2012 | .50 | 0.00 % |
|
|