|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 8.38 | NA |
| 1987 | 9.93 | 18.51 % |
| 1988 | 9.86 | -0.67 % |
| 1989 | 10.18 | 3.20 % |
| 1990 | 10.96 | 7.66 % |
| 1991 | 17.90 | 63.37 % |
| 1992 | 19.68 | 9.93 % |
| 1993 | 28.89 | 46.83 % |
| 1994 | 19.26 | -33.35 % |
| 1995 | 80.72 | 319.22 % |
| 1996 | 92.07 | 14.06 % |
| 1997 | 17.73 | -80.74 % |
| 1998 | 75.86 | 327.86 % |
| 1999 | 19.26 | -74.61 % |
| 2000 | 27.48 | 42.68 % |
| 2001 | 24.53 | -10.71 % |
| 2002 | 38.36 | 56.35 % |
| 2003 | 25.92 | -32.42 % |
| 2004 | 27.83 | 7.35 % |
| 2005 | 32.19 | 15.68 % |
| 2006 | 13.47 | -58.16 % |
| 2007 | 27.43 | 103.65 % |
| 2008 | 24.79 | -9.62 % |
| 2009 | 26.06 | 5.11 % |
| 2010 | 22.01 | -15.54 % |
|
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