|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .86 | NA |
| 1987 | 1.40 | 62.87 % |
| 1988 | .91 | -35.43 % |
| 1989 | 1.56 | 72.72 % |
| 1990 | 1.90 | 21.49 % |
| 1991 | 2.55 | 34.18 % |
| 1992 | 2.47 | -3.03 % |
| 1993 | 2.06 | -16.55 % |
| 1994 | 2.00 | -3.24 % |
| 1995 | 3.30 | 65.51 % |
| 1996 | 3.27 | -1.11 % |
| 1997 | .76 | -76.72 % |
| 1998 | .76 | 0.50 % |
| 1999 | .66 | -13.85 % |
| 2000 | .82 | 24.85 % |
| 2001 | .82 | -0.57 % |
| 2002 | .83 | 1.14 % |
| 2003 | 2.87 | 247.34 % |
| 2004 | 2.91 | 1.48 % |
| 2005 | 3.09 | 6.02 % |
| 2006 | 23.36 | 656.05 % |
| 2007 | 2.29 | -90.20 % |
| 2008 | 2.13 | -6.94 % |
| 2009 | 2.34 | 9.85 % |
| 2010 | 20.61 | 781.35 % |
|
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