|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | 8.28 | 50.00 |
| 1987 | 10.61 | 50.00 |
| 1988 | 6.38 | 50.00 |
| 1989 | 5.47 | 50.00 |
| 1990 | 6.84 | 50.00 |
| 1991 | 11.17 | 50.00 |
| 1992 | 20.01 | 50.00 |
| 1993 | 18.70 | 50.00 |
| 1994 | 11.50 | 50.00 |
| 1995 | 4.98 | 50.00 |
| 1996 | 20.94 | 50.00 |
| 1997 | 20.36 | 50.00 |
| 1998 | 24.08 | 50.00 |
| 1999 | 24.05 | 24.11 |
| 2000 | 22.16 | 25.43 |
| 2001 | 32.72 | 53.65 |
| 2002 | 6.53 | 46.93 |
| 2003 | | 45.80 |
| 2004 | | 50.00 |
| 2005 | | 49.02 |
| 2006 | .00 | 53.59 |
| 2007 | | 47.60 |
| 2008 | | 9.20 |
| 2009 | | 51.33 |
| 2010 | | 56.89 |
|
|
