|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 8.36 | NA |
| 1987 | 9.59 | 14.63 % |
| 1988 | 13.10 | 36.62 % |
| 1989 | 13.45 | 2.70 % |
| 1990 | 15.07 | 12.07 % |
| 1991 | 14.34 | -4.86 % |
| 1992 | 16.53 | 15.24 % |
| 1993 | 16.75 | 1.32 % |
| 1994 | 15.48 | -7.54 % |
| 1995 | 15.75 | 1.72 % |
| 1996 | 16.36 | 3.86 % |
| 1997 | 13.21 | -19.21 % |
| 1998 | 13.66 | 3.41 % |
| 1999 | 13.54 | -0.90 % |
| 2000 | 14.01 | 3.47 % |
| 2001 | 10.50 | -25.08 % |
| 2002 | 18.19 | 73.29 % |
| 2003 | 19.76 | 8.61 % |
| 2004 | 19.99 | 1.18 % |
| 2005 | 18.94 | -5.24 % |
| 2006 | 25.93 | 36.88 % |
| 2007 | 21.05 | -18.80 % |
| 2008 | 24.40 | 15.92 % |
| 2009 | 22.06 | -9.60 % |
| 2010 | 51.60 | 133.91 % |
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