|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.48 | NA |
| 1987 | 1.33 | -10.44 % |
| 1988 | 1.36 | 2.57 % |
| 1989 | 1.22 | -10.28 % |
| 1990 | 1.53 | 25.00 % |
| 1991 | 1.59 | 4.15 % |
| 1992 | 1.65 | 3.72 % |
| 1993 | 1.32 | -19.74 % |
| 1994 | 1.80 | 36.15 % |
| 1995 | 1.86 | 3.53 % |
| 1996 | 1.90 | 1.99 % |
| 1997 | 1.72 | -9.75 % |
| 1998 | 1.80 | 4.94 % |
| 1999 | .91 | -49.41 % |
| 2000 | .49 | -46.66 % |
| 2001 | .40 | -17.17 % |
| 2002 | .44 | 10.53 % |
| 2003 | .44 | 0.00 % |
| 2004 | .40 | -9.77 % |
| 2005 | .42 | 5.55 % |
| 2006 | .42 | 0.00 % |
| 2007 | .53 | 25.00 % |
| 2008 | .66 | 24.00 % |
| 2009 | .36 | -45.16 % |
| 2010 | .61 | 70.59 % |
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