|
| year | production | change |
| 1980 | 4,003.60 | NA |
| 1981 | 3,942.97 | -1.51 % |
| 1982 | 4,742.14 | 20.27 % |
| 1983 | 6,021.93 | 26.99 % |
| 1984 | 6,560.96 | 8.95 % |
| 1985 | 6,730.71 | 2.59 % |
| 1986 | 7,290.69 | 8.32 % |
| 1987 | 8,852.66 | 21.42 % |
| 1988 | 7,903.57 | -10.72 % |
| 1989 | 8,491.10 | 7.43 % |
| 1990 | 8,587.01 | 1.13 % |
| 1991 | 7,797.75 | -9.19 % |
| 1992 | 7,242.19 | -7.12 % |
| 1993 | 7,839.64 | 8.25 % |
| 1994 | 10,070.72 | 28.46 % |
| 1995 | 10,257.01 | 1.85 % |
| 1996 | 11,359.32 | 10.75 % |
| 1997 | 11,469.55 | 0.97 % |
| 1998 | 12,381.16 | 7.95 % |
| 1999 | 11,382.47 | -8.07 % |
| 2000 | 12,504.62 | 9.86 % |
| 2001 | 12,505.72 | 0.01 % |
| 2002 | 12,107.79 | -3.18 % |
| 2003 | 10,581.09 | -12.61 % |
| 2004 | 10,893.04 | 2.95 % |
| 2005 | 11,855.36 | 8.83 % |
| 2006 | 12,662.25 | 6.81 % |
| 2007 | 13,794.32 | 8.94 % |
| 2008 | 12,599.42 | -8.66 % |
| 2009 | 11,627.18 | -7.72 % |
| 2010 | 11,139.96 | -4.19 % |
| 2011 | 13,651.02 | 22.54 % |
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