|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 8.04 | NA |
| 1987 | 8.44 | 4.94 % |
| 1988 | 7.92 | -6.09 % |
| 1989 | 8.31 | 4.94 % |
| 1990 | 6.06 | -27.09 % |
| 1991 | 6.43 | 6.13 % |
| 1992 | 6.08 | -5.46 % |
| 1993 | 5.78 | -4.98 % |
| 1994 | 8.16 | 41.12 % |
| 1995 | 7.39 | -9.42 % |
| 1996 | 8.43 | 14.13 % |
| 1997 | 8.62 | 2.18 % |
| 1998 | 8.76 | 1.71 % |
| 1999 | 6.92 | -21.07 % |
| 2000 | 5.90 | -14.68 % |
| 2001 | 5.45 | -7.71 % |
| 2002 | 6.26 | 14.99 % |
| 2003 | 6.64 | 5.97 % |
| 2004 | 10.37 | 56.26 % |
| 2005 | 10.45 | 0.72 % |
| 2006 | 10.28 | -1.57 % |
| 2007 | 9.44 | -8.18 % |
| 2008 | 8.97 | -4.95 % |
| 2009 | 5.94 | -33.85 % |
| 2010 | 6.26 | 5.51 % |
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