|
| year | production | consumption |
| 1980 | 1,656.00 | 106.00 |
| 1981 | 1,125.00 | 116.00 |
| 1982 | 823.00 | 118.00 |
| 1983 | 1,064.00 | 123.00 |
| 1984 | 1,157.00 | 120.00 |
| 1985 | 1,023.00 | 120.59 |
| 1986 | 1,419.00 | 117.87 |
| 1987 | 1,585.00 | 114.94 |
| 1988 | 1,492.00 | 119.98 |
| 1989 | 1,783.00 | 124.72 |
| 1990 | 1,175.00 | 85.00 |
| 1991 | 190.00 | 94.80 |
| 1992 | 1,058.10 | 119.83 |
| 1993 | 1,852.36 | 130.59 |
| 1994 | 2,025.00 | 166.44 |
| 1995 | 2,057.41 | 173.42 |
| 1996 | 2,061.65 | 189.17 |
| 1997 | 2,007.10 | 211.92 |
| 1998 | 2,085.34 | 237.83 |
| 1999 | 1,897.70 | 258.88 |
| 2000 | 2,078.50 | 264.42 |
| 2001 | 1,997.50 | 275.18 |
| 2002 | 1,894.16 | 285.16 |
| 2003 | 2,136.00 | 297.83 |
| 2004 | 2,375.70 | 305.32 |
| 2005 | 2,529.18 | 329.94 |
| 2006 | 2,535.34 | 317.06 |
| 2007 | 2,464.10 | 321.61 |
| 2008 | 2,585.75 | 325.32 |
| 2009 | 2,350.00 | 372.14 |
| 2010 | 2,300.41 | 383.38 |
| 2011 | 2,530.14 | 339.00 |
|
|