|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 3.12 | NA |
| 1987 | 3.97 | 27.57 % |
| 1988 | 5.15 | 29.49 % |
| 1989 | 4.25 | -17.48 % |
| 1990 | 5.04 | 18.60 % |
| 1991 | 4.15 | -17.53 % |
| 1992 | 3.77 | -9.28 % |
| 1993 | 4.33 | 15.02 % |
| 1994 | 4.38 | 1.10 % |
| 1995 | 4.36 | -0.50 % |
| 1996 | 4.35 | -0.27 % |
| 1997 | 4.78 | 10.02 % |
| 1998 | 4.67 | -2.32 % |
| 1999 | 4.36 | -6.62 % |
| 2000 | 4.55 | 4.29 % |
| 2001 | 4.44 | -2.46 % |
| 2002 | 4.89 | 10.22 % |
| 2003 | 6.07 | 23.96 % |
| 2004 | 6.25 | 3.09 % |
| 2005 | 5.36 | -14.34 % |
| 2006 | 1.92 | -64.14 % |
| 2007 | 4.43 | 130.67 % |
| 2008 | 4.43 | 0.09 % |
| 2009 | 3.67 | -17.26 % |
| 2010 | 3.82 | 4.20 % |
|
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