|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | 62.00 | 120.00 |
| 1987 | 62.00 | 128.30 |
| 1988 | 63.00 | 120.00 |
| 1989 | 68.00 | 137.00 |
| 1990 | 85.00 | 142.40 |
| 1991 | 80.48 | 125.10 |
| 1992 | 84.48 | 127.95 |
| 1993 | 93.18 | 101.65 |
| 1994 | 95.30 | 140.00 |
| 1995 | 97.42 | 177.58 |
| 1996 | 98.31 | 130.40 |
| 1997 | 158.84 | 186.32 |
| 1998 | 44.61 | 150.00 |
| 1999 | 28.53 | 26.13 |
| 2000 | 183.00 | 150.00 |
| 2001 | 174.00 | 170.48 |
| 2002 | 156.40 | 144.01 |
| 2003 | 140.30 | 130.82 |
| 2004 | 144.25 | 133.08 |
| 2005 | 127.66 | 120.25 |
| 2006 | 133.59 | 131.90 |
| 2007 | 139.56 | 138.67 |
| 2008 | 134.12 | 130.99 |
| 2009 | 116.69 | 116.29 |
| 2010 | 96.87 | 96.87 |
|
|
