|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 12.55 | NA |
| 1987 | 14.92 | 18.86 % |
| 1988 | 14.87 | -0.30 % |
| 1989 | 14.16 | -4.77 % |
| 1990 | 15.23 | 7.54 % |
| 1991 | 14.66 | -3.73 % |
| 1992 | 15.36 | 4.78 % |
| 1993 | 13.91 | -9.47 % |
| 1994 | 16.97 | 21.98 % |
| 1995 | 17.84 | 5.12 % |
| 1996 | 17.40 | -2.44 % |
| 1997 | 17.47 | 0.39 % |
| 1998 | 18.98 | 8.66 % |
| 1999 | 19.49 | 2.69 % |
| 2000 | 18.26 | -6.33 % |
| 2001 | 20.47 | 12.14 % |
| 2002 | 22.33 | 9.09 % |
| 2003 | 23.72 | 6.22 % |
| 2004 | 24.92 | 5.06 % |
| 2005 | 28.53 | 14.47 % |
| 2006 | 28.32 | -0.72 % |
| 2007 | 25.92 | -8.50 % |
| 2008 | 25.74 | -0.66 % |
| 2009 | 23.62 | -8.25 % |
| 2010 | 18.49 | -21.72 % |
|
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