|
| year | production | change |
| 1984 | 8.49 | NA |
| 1985 | 8.87 | 4.37 % |
| 1986 | 10.32 | 16.38 % |
| 1987 | 10.75 | 4.17 % |
| 1988 | 10.15 | -5.56 % |
| 1989 | 10.67 | 5.13 % |
| 1990 | 12.61 | 18.20 % |
| 1991 | 14.47 | 14.70 % |
| 1992 | 16.22 | 12.11 % |
| 1993 | 15.07 | -7.12 % |
| 1994 | 19.54 | 29.71 % |
| 1995 | 16.64 | -14.85 % |
| 1996 | 14.31 | -13.98 % |
| 1997 | 20.46 | 42.94 % |
| 1998 | 22.97 | 12.27 % |
| 1999 | 20.09 | -12.52 % |
| 2000 | 23.11 | 15.04 % |
| 2001 | 24.02 | 3.92 % |
| 2002 | 19.66 | -18.15 % |
| 2003 | 20.22 | 2.83 % |
| 2004 | 19.63 | -2.94 % |
| 2005 | 22.42 | 14.22 % |
| 2006 | 22.93 | 2.30 % |
| 2007 | 24.91 | 8.64 % |
| 2008 | 23.91 | -4.04 % |
| 2009 | 21.13 | -11.62 % |
| 2010 | 23.26 | 10.09 % |
|
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