|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 18.31 | NA |
| 1987 | 17.99 | -1.75 % |
| 1988 | 19.11 | 6.20 % |
| 1989 | 20.57 | 7.61 % |
| 1990 | 22.55 | 9.66 % |
| 1991 | 22.10 | -2.00 % |
| 1992 | 23.14 | 4.70 % |
| 1993 | 24.08 | 4.08 % |
| 1994 | 23.33 | -3.12 % |
| 1995 | 23.21 | -0.54 % |
| 1996 | 23.61 | 1.74 % |
| 1997 | 24.63 | 4.33 % |
| 1998 | 24.66 | 0.09 % |
| 1999 | 22.88 | -7.20 % |
| 2000 | 26.55 | 16.03 % |
| 2001 | 31.00 | 16.78 % |
| 2002 | 24.84 | -19.86 % |
| 2003 | 29.89 | 20.32 % |
| 2004 | 30.90 | 3.39 % |
| 2005 | 31.43 | 1.71 % |
| 2006 | 28.46 | -9.44 % |
| 2007 | 24.23 | -14.86 % |
| 2008 | 30.07 | 24.07 % |
| 2009 | 31.27 | 3.99 % |
| 2010 | 28.91 | -7.55 % |
|
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