|
| year | production | change |
| 1980 | 8,597.00 | NA |
| 1981 | 8,572.00 | -0.29 % |
| 1982 | 8,649.00 | 0.90 % |
| 1983 | 8,688.00 | 0.45 % |
| 1984 | 8,879.00 | 2.20 % |
| 1985 | 8,971.00 | 1.04 % |
| 1986 | 8,680.00 | -3.24 % |
| 1987 | 8,349.14 | -3.81 % |
| 1988 | 8,140.00 | -2.50 % |
| 1989 | 7,613.00 | -6.47 % |
| 1990 | 7,355.31 | -3.38 % |
| 1991 | 7,416.55 | 0.83 % |
| 1992 | 7,171.12 | -3.31 % |
| 1993 | 6,846.67 | -4.52 % |
| 1994 | 6,661.58 | -2.70 % |
| 1995 | 6,559.64 | -1.53 % |
| 1996 | 6,464.52 | -1.45 % |
| 1997 | 6,451.59 | -0.20 % |
| 1998 | 6,251.83 | -3.10 % |
| 1999 | 5,881.46 | -5.92 % |
| 2000 | 5,821.60 | -1.02 % |
| 2001 | 5,801.40 | -0.35 % |
| 2002 | 5,744.08 | -0.99 % |
| 2003 | 5,644.07 | -1.74 % |
| 2004 | 5,435.14 | -3.70 % |
| 2005 | 5,185.74 | -4.59 % |
| 2006 | 5,088.55 | -1.87 % |
| 2007 | 5,076.95 | -0.23 % |
| 2008 | 5,000.37 | -1.51 % |
| 2009 | 5,352.88 | 7.05 % |
| 2010 | 5,478.72 | 2.35 % |
| 2011 | 5,651.88 | 3.16 % |
| 2012 | 6,467.17 | 14.43 % |
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