|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.56 | NA |
| 1987 | 2.45 | -4.00 % |
| 1988 | 2.51 | 2.22 % |
| 1989 | 2.45 | -2.17 % |
| 1990 | 2.41 | -1.67 % |
| 1991 | 3.93 | 62.85 % |
| 1992 | 4.28 | 8.97 % |
| 1993 | 4.07 | -4.91 % |
| 1994 | 3.17 | -22.16 % |
| 1995 | 4.25 | 33.95 % |
| 1996 | 3.44 | -18.93 % |
| 1997 | 4.17 | 21.05 % |
| 1998 | 4.58 | 9.95 % |
| 1999 | 4.19 | -8.48 % |
| 2000 | 4.40 | 4.83 % |
| 2001 | 4.89 | 11.18 % |
| 2002 | 4.07 | -16.71 % |
| 2003 | 3.95 | -3.01 % |
| 2004 | 4.26 | 7.99 % |
| 2005 | 4.27 | 0.27 % |
| 2006 | 4.18 | -2.24 % |
| 2007 | 4.05 | -3.16 % |
| 2008 | 3.82 | -5.56 % |
| 2009 | 4.54 | 18.80 % |
| 2010 | 4.36 | -4.05 % |
|
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