|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 4.30 | NA |
| 1987 | 5.62 | 30.93 % |
| 1988 | 5.00 | -11.03 % |
| 1989 | 4.70 | -5.99 % |
| 1990 | 3.62 | -23.06 % |
| 1991 | 4.30 | 18.65 % |
| 1992 | 4.33 | 0.71 % |
| 1993 | 4.99 | 15.38 % |
| 1994 | 4.40 | -11.88 % |
| 1995 | 4.40 | 0.00 % |
| 1996 | 7.34 | 66.92 % |
| 1997 | 6.44 | -12.24 % |
| 1998 | 5.56 | -13.65 % |
| 1999 | 5.77 | 3.68 % |
| 2000 | 7.32 | 26.94 % |
| 2001 | 7.22 | -1.40 % |
| 2002 | 9.14 | 26.62 % |
| 2003 | 10.08 | 10.29 % |
| 2004 | 12.75 | 26.44 % |
| 2005 | 10.63 | -16.57 % |
| 2006 | 6.01 | -43.46 % |
| 2007 | 8.13 | 35.29 % |
| 2008 | 7.38 | -9.30 % |
| 2009 | 2.25 | -69.50 % |
| 2010 | 5.99 | 166.34 % |
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