|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .49 | NA |
| 1987 | .55 | 12.94 % |
| 1988 | .62 | 11.25 % |
| 1989 | .59 | -4.95 % |
| 1990 | .55 | -5.52 % |
| 1991 | .53 | -4.23 % |
| 1992 | .65 | 23.12 % |
| 1993 | .54 | -17.48 % |
| 1994 | .43 | -20.41 % |
| 1995 | .30 | -28.92 % |
| 1996 | .50 | 63.27 % |
| 1997 | .43 | -13.28 % |
| 1998 | .37 | -13.44 % |
| 1999 | .47 | 25.36 % |
| 2000 | .62 | 31.96 % |
| 2001 | .62 | 0.32 % |
| 2002 | .56 | -9.06 % |
| 2003 | .66 | 16.89 % |
| 2004 | .53 | -19.40 % |
| 2005 | .53 | 0.11 % |
| 2006 | .67 | 25.67 % |
| 2007 | .51 | -23.82 % |
| 2008 | .29 | -43.75 % |
| 2009 | .40 | 41.11 % |
| 2010 | .50 | 23.40 % |
|
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