|
| year | production | consumption |
| 1984 | 540.53 | 1,969.50 |
| 1985 | 552.32 | 2,051.78 |
| 1986 | 566.58 | 1,991.76 |
| 1987 | 550.33 | 2,123.57 |
| 1988 | 608.66 | 2,217.08 |
| 1989 | 665.02 | 2,252.45 |
| 1990 | 615.26 | 2,108.79 |
| 1991 | 658.36 | 2,293.21 |
| 1992 | 727.95 | 2,417.54 |
| 1993 | 713.02 | 2,409.50 |
| 1994 | 744.89 | 2,531.07 |
| 1995 | 783.30 | 2,567.09 |
| 1996 | 795.93 | 2,673.79 |
| 1997 | 798.46 | 2,721.72 |
| 1998 | 773.49 | 2,594.47 |
| 1999 | 774.05 | 2,947.09 |
| 2000 | 786.88 | 3,005.09 |
| 2001 | 754.83 | 2,825.89 |
| 2002 | 761.80 | 2,924.42 |
| 2003 | 754.70 | 2,859.92 |
| 2004 | 740.15 | 2,959.14 |
| 2005 | 662.82 | 2,845.93 |
| 2006 | 710.53 | 2,857.96 |
| 2007 | 740.50 | 2,974.76 |
| 2008 | 713.07 | 2,817.58 |
| 2009 | 705.45 | 2,897.70 |
| 2010 | 742.84 | 3,040.28 |
|
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