|
| year | production | change |
| 1984 | 11.98 | NA |
| 1985 | 13.54 | 12.99 % |
| 1986 | 16.56 | 22.32 % |
| 1987 | 16.94 | 2.30 % |
| 1988 | 16.36 | -3.45 % |
| 1989 | 16.15 | -1.28 % |
| 1990 | 14.08 | -12.81 % |
| 1991 | 14.53 | 3.19 % |
| 1992 | 11.82 | -18.63 % |
| 1993 | 12.65 | 7.04 % |
| 1994 | 15.92 | 25.86 % |
| 1995 | 14.56 | -8.57 % |
| 1996 | 17.25 | 18.46 % |
| 1997 | 19.01 | 10.20 % |
| 1998 | 22.06 | 16.07 % |
| 1999 | 18.50 | -16.16 % |
| 2000 | 24.24 | 31.07 % |
| 2001 | 20.81 | -14.15 % |
| 2002 | 20.82 | 0.01 % |
| 2003 | 19.87 | -4.57 % |
| 2004 | 16.17 | -18.62 % |
| 2005 | 14.62 | -9.56 % |
| 2006 | 13.00 | -11.07 % |
| 2007 | 14.72 | 13.17 % |
| 2008 | 16.29 | 10.72 % |
| 2009 | 14.49 | -11.06 % |
| 2010 | 17.00 | 17.32 % |
|
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