|
| year | production | change |
| 1984 | 2.32 | NA |
| 1985 | 8.94 | 285.05 % |
| 1986 | 6.84 | -23.50 % |
| 1987 | 3.91 | -42.89 % |
| 1988 | 7.99 | 104.42 % |
| 1989 | 3.19 | -60.00 % |
| 1990 | 6.63 | 107.46 % |
| 1991 | 3.30 | -50.19 % |
| 1992 | 3.66 | 10.90 % |
| 1993 | 3.80 | 3.79 % |
| 1994 | 2.70 | -28.98 % |
| 1995 | 2.92 | 8.12 % |
| 1996 | 2.82 | -3.27 % |
| 1997 | 4.47 | 58.32 % |
| 1998 | 5.07 | 13.43 % |
| 1999 | 3.71 | -26.76 % |
| 2000 | 5.96 | 60.59 % |
| 2001 | 5.55 | -6.94 % |
| 2002 | 5.68 | 2.42 % |
| 2003 | 37.39 | 558.05 % |
| 2004 | 85.45 | 128.54 % |
| 2005 | 86.94 | 1.74 % |
| 2006 | 90.65 | 4.27 % |
| 2007 | 87.55 | -3.42 % |
| 2008 | 81.97 | -6.37 % |
| 2009 | 95.86 | 16.95 % |
| 2010 | 116.74 | 21.78 % |
|
|
