|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 3.67 | NA |
| 1987 | 4.50 | 22.61 % |
| 1988 | 4.62 | 2.71 % |
| 1989 | 4.70 | 1.76 % |
| 1990 | 3.86 | -17.99 % |
| 1991 | 4.81 | 24.59 % |
| 1992 | 5.65 | 17.55 % |
| 1993 | 5.01 | -11.31 % |
| 1994 | 6.01 | 19.99 % |
| 1995 | 5.25 | -12.75 % |
| 1996 | 5.06 | -3.48 % |
| 1997 | 6.55 | 29.39 % |
| 1998 | 6.71 | 2.38 % |
| 1999 | 5.83 | -13.10 % |
| 2000 | 5.80 | -0.41 % |
| 2001 | 5.49 | -5.49 % |
| 2002 | 4.15 | -24.32 % |
| 2003 | | NA |
| 2004 | | NA |
| 2005 | .51 | NA |
| 2006 | .45 | -11.99 % |
| 2007 | .51 | 13.56 % |
| 2008 | .45 | -12.00 % |
| 2009 | .49 | 9.17 % |
| 2010 | .47 | -4.19 % |
|
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