|
| year | production | change |
| 1984 | 34.36 | NA |
| 1985 | 31.59 | -8.05 % |
| 1986 | 27.45 | -13.11 % |
| 1987 | 30.58 | 11.38 % |
| 1988 | 28.69 | -6.17 % |
| 1989 | 27.98 | -2.48 % |
| 1990 | 17.36 | -37.96 % |
| 1991 | 18.64 | 7.39 % |
| 1992 | 20.92 | 12.21 % |
| 1993 | 11.94 | -42.93 % |
| 1994 | 10.58 | -11.36 % |
| 1995 | 6.86 | -35.14 % |
| 1996 | 7.37 | 7.33 % |
| 1997 | 3.47 | -52.84 % |
| 1998 | 2.29 | -34.07 % |
| 1999 | 1.15 | -49.88 % |
| 2000 | 1.14 | -0.75 % |
| 2001 | 1.46 | 28.17 % |
| 2002 | 1.37 | -6.00 % |
| 2003 | 1.42 | 3.39 % |
| 2004 | 1.27 | -10.86 % |
| 2005 | .90 | -28.96 % |
| 2006 | .42 | -53.66 % |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
|
|
