|
| year | production | change |
| 1980 | .03 | NA |
| 1981 | .03 | 0.00 % |
| 1982 | .03 | 0.00 % |
| 1983 | .10 | 233.33 % |
| 1984 | .30 | 200.00 % |
| 1985 | .33 | 10.00 % |
| 1986 | .32 | -3.03 % |
| 1987 | .26 | -18.75 % |
| 1988 | .20 | -23.08 % |
| 1989 | .41 | 105.00 % |
| 1990 | .42 | 2.44 % |
| 1991 | .49 | 16.67 % |
| 1992 | .48 | -2.04 % |
| 1993 | .41 | -14.58 % |
| 1994 | .36 | -12.20 % |
| 1995 | .34 | -5.56 % |
| 1996 | .29 | -14.71 % |
| 1997 | .23 | -20.69 % |
| 1998 | .17 | -26.09 % |
| 1999 | .15 | -11.76 % |
| 2000 | .19 | 26.67 % |
| 2001 | .24 | 26.32 % |
| 2002 | .25 | 4.17 % |
| 2003 | .36 | 44.00 % |
| 2004 | .36 | 0.00 % |
| 2005 | .41 | 13.89 % |
| 2006 | .42 | 2.44 % |
|
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