|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.38 | NA |
| 1987 | 4.70 | 97.27 % |
| 1988 | 4.29 | -8.64 % |
| 1989 | 3.50 | -18.52 % |
| 1990 | 6.37 | 82.17 % |
| 1991 | 5.49 | -13.83 % |
| 1992 | 8.25 | 50.34 % |
| 1993 | 2.26 | -72.61 % |
| 1994 | 5.42 | 139.82 % |
| 1995 | 4.99 | -8.00 % |
| 1996 | 6.91 | 38.62 % |
| 1997 | 4.17 | -39.65 % |
| 1998 | 2.53 | -39.48 % |
| 1999 | 4.62 | 83.05 % |
| 2000 | .33 | -92.89 % |
| 2001 | 3.13 | 853.25 % |
| 2002 | 3.89 | 24.02 % |
| 2003 | .70 | -82.00 % |
| 2004 | .68 | -3.40 % |
| 2005 | 1.31 | 93.29 % |
| 2006 | .83 | -36.36 % |
| 2007 | .03 | -96.18 % |
| 2008 | 2.07 | 6,400.16 % |
| 2009 | 1.02 | -50.53 % |
| 2010 | 2.81 | 174.56 % |
|
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