|
| year | production | change |
| 1980 | 30,877.95 | NA |
| 1981 | 38,308.63 | 24.06 % |
| 1982 | 43,326.35 | 13.10 % |
| 1983 | 44,040.64 | 1.65 % |
| 1984 | 43,642.71 | -0.90 % |
| 1985 | 43,720.98 | 0.18 % |
| 1986 | 42,240.57 | -3.39 % |
| 1987 | 38,130.05 | -9.73 % |
| 1988 | 35,097.59 | -7.95 % |
| 1989 | 40,180.35 | 14.48 % |
| 1990 | 39,179.45 | -2.49 % |
| 1991 | 36,866.80 | -5.90 % |
| 1992 | 36,816.10 | -0.14 % |
| 1993 | 34,727.22 | -5.67 % |
| 1994 | 32,577.71 | -6.19 % |
| 1995 | 31,132.58 | -4.44 % |
| 1996 | 29,684.14 | -4.65 % |
| 1997 | 29,145.11 | -1.82 % |
| 1998 | 28,797.88 | -1.19 % |
| 1999 | 26,767.43 | -7.05 % |
| 2000 | 25,872.35 | -3.34 % |
| 2001 | 24,998.22 | -3.38 % |
| 2002 | 24,288.33 | -2.84 % |
| 2003 | 22,665.73 | -6.68 % |
| 2004 | 22,583.05 | -0.36 % |
| 2005 | 21,474.13 | -4.91 % |
| 2006 | 20,334.34 | -5.31 % |
| 2007 | 18,939.91 | -6.86 % |
| 2008 | 11,229.25 | -40.71 % |
| 2009 | 10,411.33 | -7.28 % |
| 2010 | 9,292.48 | -10.75 % |
| 2011 | 7,298.40 | -21.46 % |
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