|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 3.86 | NA |
| 1987 | 5.04 | 30.53 % |
| 1988 | 1.52 | -69.87 % |
| 1989 | 3.13 | 106.13 % |
| 1990 | 4.21 | 34.53 % |
| 1991 | 3.17 | -24.66 % |
| 1992 | 4.57 | 44.09 % |
| 1993 | 3.17 | -30.61 % |
| 1994 | 3.62 | 14.18 % |
| 1995 | 3.94 | 8.76 % |
| 1996 | 5.43 | 37.81 % |
| 1997 | 5.59 | 2.97 % |
| 1998 | 5.91 | 5.78 % |
| 1999 | 2.92 | -50.52 % |
| 2000 | 3.82 | 30.44 % |
| 2001 | 3.53 | -7.35 % |
| 2002 | 4.95 | 40.05 % |
| 2003 | 3.23 | -34.70 % |
| 2004 | 1.72 | -46.70 % |
| 2005 | 1.78 | 3.34 % |
| 2006 | 4.62 | 159.66 % |
| 2007 | 3.88 | -16.00 % |
| 2008 | 5.35 | 37.89 % |
| 2009 | 3.52 | -34.27 % |
| 2010 | 3.89 | 10.45 % |
|
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