|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.92 | NA |
| 1987 | 2.90 | -0.80 % |
| 1988 | 2.89 | -0.27 % |
| 1989 | 3.11 | 7.55 % |
| 1990 | 3.23 | 3.86 % |
| 1991 | 3.37 | 4.25 % |
| 1992 | 3.24 | -3.65 % |
| 1993 | 3.15 | -2.70 % |
| 1994 | 3.83 | 21.48 % |
| 1995 | 3.93 | 2.44 % |
| 1996 | 4.40 | 12.17 % |
| 1997 | 4.52 | 2.75 % |
| 1998 | 4.30 | -4.97 % |
| 1999 | 4.46 | 3.80 % |
| 2000 | 4.61 | 3.38 % |
| 2001 | 4.51 | -2.26 % |
| 2002 | 4.60 | 2.07 % |
| 2003 | 4.70 | 2.03 % |
| 2004 | 4.68 | -0.27 % |
| 2005 | 4.56 | -2.72 % |
| 2006 | 4.79 | 5.13 % |
| 2007 | 5.07 | 5.85 % |
| 2008 | 4.72 | -6.91 % |
| 2009 | 4.65 | -1.49 % |
| 2010 | 4.60 | -1.01 % |
|
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