|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.66 | NA |
| 1987 | 2.01 | 20.85 % |
| 1988 | 2.51 | 24.80 % |
| 1989 | .28 | -89.03 % |
| 1990 | 3.93 | 1,328.83 % |
| 1991 | 5.02 | 27.74 % |
| 1992 | 5.98 | 19.06 % |
| 1993 | 7.38 | 23.55 % |
| 1994 | 1.10 | -85.09 % |
| 1995 | 1.53 | 38.57 % |
| 1996 | 1.16 | -23.88 % |
| 1997 | 1.29 | 11.05 % |
| 1998 | .44 | -65.52 % |
| 1999 | .15 | -66.67 % |
| 2000 | .21 | 42.46 % |
| 2001 | .19 | -9.75 % |
| 2002 | .17 | -11.11 % |
| 2003 | .13 | -25.00 % |
| 2004 | .21 | 66.21 % |
| 2005 | .21 | 0.27 % |
| 2006 | 1.59 | 650.00 % |
| 2007 | 2.46 | 54.83 % |
| 2008 | 1.69 | -31.11 % |
| 2009 | 1.27 | -25.00 % |
| 2010 | 1.31 | 3.33 % |
|
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