|
| year | production | change |
| 1984 | 6.15 | NA |
| 1985 | 5.37 | -12.69 % |
| 1986 | 4.96 | -7.60 % |
| 1987 | 4.54 | -8.50 % |
| 1988 | 4.14 | -8.70 % |
| 1989 | 4.37 | 5.36 % |
| 1990 | 6.06 | 38.83 % |
| 1991 | 4.28 | -29.37 % |
| 1992 | 5.49 | 28.31 % |
| 1993 | 4.71 | -14.29 % |
| 1994 | 4.84 | 2.68 % |
| 1995 | 4.58 | -5.21 % |
| 1996 | 9.07 | 97.90 % |
| 1997 | 5.75 | -36.66 % |
| 1998 | 4.12 | -28.37 % |
| 1999 | 5.00 | 21.57 % |
| 2000 | 4.08 | -18.35 % |
| 2001 | 3.90 | -4.56 % |
| 2002 | 4.92 | 26.21 % |
| 2003 | 4.01 | -18.54 % |
| 2004 | 3.09 | -22.97 % |
| 2005 | 1.88 | -38.95 % |
| 2006 | 2.04 | 7.99 % |
| 2007 | 1.67 | -17.77 % |
| 2008 | 1.37 | -18.06 % |
| 2009 | 1.02 | -25.89 % |
| 2010 | .38 | -62.53 % |
|
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