|
| year | production | change |
| 1980 | .59 | NA |
| 1981 | .31 | -47.46 % |
| 1982 | .31 | 0.00 % |
| 1983 | .27 | -12.90 % |
| 1984 | .12 | -55.56 % |
| 1985 | .24 | 100.00 % |
| 1986 | .20 | -16.67 % |
| 1987 | .78 | 290.00 % |
| 1988 | .71 | -8.97 % |
| 1989 | 1.10 | 54.93 % |
| 1990 | 1.14 | 3.64 % |
| 1991 | 1.18 | 3.51 % |
| 1992 | 1.22 | 3.39 % |
| 1993 | 1.25 | 2.46 % |
| 1994 | 1.22 | -2.40 % |
| 1995 | 1.45 | 18.72 % |
| 1996 | 1.52 | 4.84 % |
| 1997 | 26.49 | 1,644.18 % |
| 1998 | 14.13 | -46.67 % |
| 1999 | 17.66 | 25.00 % |
| 2000 | 21.19 | 20.00 % |
| 2001 | 10.59 | -50.00 % |
| 2002 | 12.36 | 16.67 % |
| 2003 | 13.07 | 5.71 % |
| 2004 | 13.07 | 0.00 % |
| 2005 | 14.13 | 8.11 % |
| 2006 | 14.13 | 0.00 % |
| 2007 | 21.19 | 50.00 % |
| 2008 | 40.97 | 93.33 % |
| 2009 | 40.97 | 0.00 % |
| 2010 | 37.79 | -7.76 % |
| 2011 | 36.37 | -3.74 % |
|
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