|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 20.69 | NA |
| 1987 | 20.67 | -0.13 % |
| 1988 | 7.54 | -63.52 % |
| 1989 | 10.59 | 40.48 % |
| 1990 | 11.00 | 3.87 % |
| 1991 | 5.77 | -47.54 % |
| 1992 | 13.18 | 128.38 % |
| 1993 | 19.67 | 49.27 % |
| 1994 | 19.75 | 0.39 % |
| 1995 | 19.77 | 0.11 % |
| 1996 | 19.68 | -0.48 % |
| 1997 | 32.51 | 65.24 % |
| 1998 | 33.20 | 2.12 % |
| 1999 | 32.08 | -3.37 % |
| 2000 | 32.55 | 1.44 % |
| 2001 | 35.23 | 8.26 % |
| 2002 | 38.11 | 8.16 % |
| 2003 | 33.40 | -12.36 % |
| 2004 | 4.18 | -87.47 % |
| 2005 | 36.61 | 774.90 % |
| 2006 | 33.40 | -8.77 % |
| 2007 | 3.85 | -88.49 % |
| 2008 | 5.12 | 33.06 % |
| 2009 | 5.48 | 7.05 % |
| 2010 | 44.55 | 713.35 % |
|
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