|
| year | production | consumption |
| 1984 | 554.75 | 564.27 |
| 1985 | 556.55 | 562.67 |
| 1986 | 546.35 | 564.97 |
| 1987 | 571.37 | 570.77 |
| 1988 | 598.85 | 584.75 |
| 1989 | 606.33 | 597.82 |
| 1990 | 611.80 | 583.08 |
| 1991 | 599.46 | 563.95 |
| 1992 | 590.44 | 570.18 |
| 1993 | 620.56 | 584.69 |
| 1994 | 632.76 | 601.01 |
| 1995 | 644.25 | 602.15 |
| 1996 | 667.39 | 608.12 |
| 1997 | 662.65 | 624.67 |
| 1998 | 665.36 | 641.88 |
| 1999 | 703.62 | 658.28 |
| 2000 | 722.13 | 656.77 |
| 2001 | 753.02 | 666.67 |
| 2002 | 788.38 | 680.23 |
| 2003 | 787.15 | 691.03 |
| 2004 | 769.66 | 702.23 |
| 2005 | 754.03 | 701.51 |
| 2006 | 721.85 | 703.11 |
| 2007 | 760.71 | 724.81 |
| 2008 | 701.30 | 717.99 |
| 2009 | 717.82 | 729.50 |
| 2010 | 719.23 | 754.60 |
|
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