|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 9.33 | NA |
| 1987 | 9.86 | 5.66 % |
| 1988 | 9.56 | -3.05 % |
| 1989 | 10.05 | 5.16 % |
| 1990 | 10.87 | 8.15 % |
| 1991 | 11.54 | 6.09 % |
| 1992 | 11.28 | -2.18 % |
| 1993 | 12.92 | 14.52 % |
| 1994 | 13.71 | 6.11 % |
| 1995 | 15.31 | 11.63 % |
| 1996 | 20.68 | 35.11 % |
| 1997 | 15.32 | -25.94 % |
| 1998 | 14.65 | -4.36 % |
| 1999 | 15.49 | 5.77 % |
| 2000 | 15.63 | 0.89 % |
| 2001 | 15.75 | 0.75 % |
| 2002 | 15.96 | 1.37 % |
| 2003 | 23.00 | 44.08 % |
| 2004 | 18.33 | -20.32 % |
| 2005 | 21.10 | 15.12 % |
| 2006 | 55.31 | 162.13 % |
| 2007 | 18.46 | -66.61 % |
| 2008 | 18.97 | 2.75 % |
| 2009 | 17.36 | -8.52 % |
| 2010 | 17.40 | 0.25 % |
|
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