|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.87 | NA |
| 1987 | 3.06 | 6.50 % |
| 1988 | 3.94 | 28.66 % |
| 1989 | 2.77 | -29.71 % |
| 1990 | 4.19 | 51.34 % |
| 1991 | 3.46 | -17.45 % |
| 1992 | 2.62 | -24.11 % |
| 1993 | 4.04 | 54.02 % |
| 1994 | 4.23 | 4.62 % |
| 1995 | 3.58 | -15.47 % |
| 1996 | 4.68 | 31.01 % |
| 1997 | 4.00 | -14.69 % |
| 1998 | 4.37 | 9.36 % |
| 1999 | 3.95 | -9.63 % |
| 2000 | 4.96 | 25.69 % |
| 2001 | 4.42 | -11.02 % |
| 2002 | 5.28 | 19.58 % |
| 2003 | 4.58 | -13.27 % |
| 2004 | 4.73 | 3.29 % |
| 2005 | 4.18 | -11.58 % |
| 2006 | 4.53 | 8.38 % |
| 2007 | 3.81 | -15.98 % |
| 2008 | 3.83 | 0.61 % |
| 2009 | 4.18 | 9.15 % |
| 2010 | 3.69 | -11.73 % |
|
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