|
| year | production | change |
| 1984 | 5.31 | NA |
| 1985 | 5.33 | 0.27 % |
| 1986 | 5.72 | 7.41 % |
| 1987 | 8.78 | 53.45 % |
| 1988 | | NA |
| 1989 | 8.78 | NA |
| 1990 | 4.57 | -47.94 % |
| 1991 | 4.57 | 0.00 % |
| 1992 | 4.95 | 8.34 % |
| 1993 | 5.40 | 9.02 % |
| 1994 | 6.23 | 15.43 % |
| 1995 | 5.88 | -5.58 % |
| 1996 | 5.22 | -11.24 % |
| 1997 | 5.72 | 9.56 % |
| 1998 | 7.09 | 23.90 % |
| 1999 | 9.15 | 29.15 % |
| 2000 | 9.22 | 0.68 % |
| 2001 | 8.08 | -12.36 % |
| 2002 | 8.04 | -0.47 % |
| 2003 | 8.49 | 5.62 % |
| 2004 | 8.20 | -3.36 % |
| 2005 | 8.94 | 8.92 % |
| 2006 | 8.99 | 0.61 % |
| 2007 | 8.20 | -8.81 % |
| 2008 | 9.70 | 18.32 % |
| 2009 | 9.34 | -3.71 % |
| 2010 | 13.41 | 43.58 % |
|
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