|
| year | production | change |
| 1980 | 3,454.64 | NA |
| 1981 | 3,160.33 | -8.52 % |
| 1982 | 3,052.30 | -3.42 % |
| 1983 | 3,666.29 | 20.12 % |
| 1984 | 3,427.09 | -6.52 % |
| 1985 | 3,432.60 | 0.16 % |
| 1986 | 4,461.05 | 29.96 % |
| 1987 | 5,338.49 | 19.67 % |
| 1988 | 5,583.21 | 4.58 % |
| 1989 | 5,060.71 | -9.36 % |
| 1990 | 5,464.16 | 7.97 % |
| 1991 | 6,190.58 | 13.29 % |
| 1992 | 6,115.62 | -1.21 % |
| 1993 | 5,825.72 | -4.74 % |
| 1994 | 5,406.84 | -7.19 % |
| 1995 | 5,118.03 | -5.34 % |
| 1996 | 4,862.30 | -5.00 % |
| 1997 | 4,414.76 | -9.20 % |
| 1998 | 4,587.82 | 3.92 % |
| 1999 | 5,099.29 | 11.15 % |
| 2000 | 4,695.85 | -7.91 % |
| 2001 | 4,569.08 | -2.70 % |
| 2002 | 4,367.36 | -4.41 % |
| 2003 | 3,913.21 | -10.40 % |
| 2004 | 3,764.39 | -3.80 % |
| 2005 | 3,991.47 | 6.03 % |
| 2006 | 3,799.67 | -4.81 % |
| 2007 | 3,807.38 | 0.20 % |
| 2008 | 2,982.85 | -21.66 % |
| 2009 | 3,143.79 | 5.40 % |
| 2010 | 3,398.43 | 8.10 % |
| 2011 | 3,302.53 | -2.82 % |
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