|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 12.20 | NA |
| 1987 | 12.01 | -1.51 % |
| 1988 | 12.08 | 0.53 % |
| 1989 | 12.21 | 1.07 % |
| 1990 | 12.27 | 0.49 % |
| 1991 | 12.30 | 0.29 % |
| 1992 | 12.18 | -0.99 % |
| 1993 | 12.12 | -0.48 % |
| 1994 | 12.02 | -0.80 % |
| 1995 | 13.69 | 13.83 % |
| 1996 | 11.90 | -13.03 % |
| 1997 | 13.22 | 11.05 % |
| 1998 | 12.21 | -7.64 % |
| 1999 | 14.01 | 14.72 % |
| 2000 | 11.31 | -19.26 % |
| 2001 | 13.36 | 18.17 % |
| 2002 | 11.30 | -15.43 % |
| 2003 | 11.64 | 3.00 % |
| 2004 | 11.50 | -1.25 % |
| 2005 | 11.63 | 1.14 % |
| 2006 | 12.29 | 5.66 % |
| 2007 | 12.66 | 3.08 % |
| 2008 | 12.41 | -2.02 % |
| 2009 | 12.74 | 2.70 % |
| 2010 | 11.80 | -7.36 % |
|
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