|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 13.64 | NA |
| 1987 | 12.93 | -5.22 % |
| 1988 | 12.24 | -5.34 % |
| 1989 | 10.95 | -10.54 % |
| 1990 | 8.79 | -19.69 % |
| 1991 | 5.53 | -37.09 % |
| 1992 | 5.52 | -0.11 % |
| 1993 | 4.22 | -23.66 % |
| 1994 | 2.99 | -29.06 % |
| 1995 | 2.96 | -1.10 % |
| 1996 | .85 | -71.31 % |
| 1997 | .82 | -3.15 % |
| 1998 | .80 | -2.12 % |
| 1999 | 1.37 | 70.48 % |
| 2000 | 1.23 | -10.68 % |
| 2001 | .85 | -30.95 % |
| 2002 | 1.45 | 71.10 % |
| 2003 | .90 | -37.83 % |
| 2004 | 1.31 | 45.09 % |
| 2005 | 1.34 | 2.40 % |
| 2006 | 1.00 | -24.99 % |
| 2007 | .58 | -41.79 % |
| 2008 | .55 | -6.25 % |
| 2009 | .53 | -2.37 % |
| 2010 | .11 | -78.93 % |
|
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