|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 9.55 | NA |
| 1987 | 10.12 | 5.99 % |
| 1988 | 10.50 | 3.76 % |
| 1989 | 6.00 | -42.88 % |
| 1990 | 10.55 | 75.90 % |
| 1991 | 9.65 | -8.60 % |
| 1992 | 7.38 | -23.46 % |
| 1993 | 11.76 | 59.27 % |
| 1994 | 13.44 | 14.26 % |
| 1995 | 12.23 | -8.98 % |
| 1996 | 12.34 | 0.90 % |
| 1997 | 11.11 | -10.00 % |
| 1998 | 13.91 | 25.23 % |
| 1999 | 12.03 | -13.53 % |
| 2000 | 15.32 | 27.37 % |
| 2001 | 12.82 | -16.28 % |
| 2002 | 14.66 | 14.35 % |
| 2003 | 12.72 | -13.25 % |
| 2004 | 13.11 | 3.10 % |
| 2005 | 12.37 | -5.65 % |
| 2006 | 12.84 | 3.80 % |
| 2007 | 9.10 | -29.19 % |
| 2008 | 9.22 | 1.35 % |
| 2009 | 9.92 | 7.62 % |
| 2010 | 9.04 | -8.87 % |
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