|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 8.87 | NA |
| 1987 | 6.85 | -22.80 % |
| 1988 | 7.61 | 11.13 % |
| 1989 | 9.22 | 21.10 % |
| 1990 | 9.96 | 8.02 % |
| 1991 | 9.24 | -7.22 % |
| 1992 | 8.29 | -10.26 % |
| 1993 | 7.56 | -8.79 % |
| 1994 | 7.33 | -3.08 % |
| 1995 | 6.79 | -7.28 % |
| 1996 | 4.22 | -37.83 % |
| 1997 | 3.42 | -19.10 % |
| 1998 | 4.17 | 22.09 % |
| 1999 | 4.21 | 1.02 % |
| 2000 | 1.77 | -57.90 % |
| 2001 | 1.55 | -12.86 % |
| 2002 | .80 | -47.95 % |
| 2003 | .59 | -26.32 % |
| 2004 | .61 | 3.29 % |
| 2005 | .55 | -10.54 % |
| 2006 | .49 | -11.11 % |
| 2007 | .44 | -8.70 % |
| 2008 | .17 | -61.91 % |
| 2009 | .23 | 37.50 % |
| 2010 | .93 | 300.00 % |
|
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