|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 3.30 | NA |
| 1987 | 3.48 | 5.65 % |
| 1988 | 4.28 | 22.83 % |
| 1989 | 3.58 | -16.27 % |
| 1990 | 4.10 | 14.43 % |
| 1991 | 2.25 | -45.03 % |
| 1992 | 4.21 | 87.02 % |
| 1993 | 3.99 | -5.31 % |
| 1994 | 6.03 | 51.25 % |
| 1995 | 5.83 | -3.39 % |
| 1996 | 6.02 | 3.22 % |
| 1997 | 4.95 | -17.74 % |
| 1998 | 6.20 | 25.20 % |
| 1999 | 7.87 | 27.05 % |
| 2000 | 7.95 | 1.02 % |
| 2001 | 8.02 | 0.79 % |
| 2002 | 7.67 | -4.33 % |
| 2003 | 9.47 | 23.47 % |
| 2004 | 9.60 | 1.45 % |
| 2005 | 7.28 | -24.20 % |
| 2006 | 2.35 | -67.69 % |
| 2007 | 6.93 | 194.60 % |
| 2008 | 8.36 | 20.65 % |
| 2009 | 6.67 | -20.26 % |
| 2010 | 6.95 | 4.29 % |
|
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