|
| year | production | consumption |
| 1984 | 486.90 | 468.75 |
| 1985 | 447.84 | 447.52 |
| 1986 | 860.76 | 853.25 |
| 1987 | 819.98 | 880.11 |
| 1988 | 840.19 | 938.34 |
| 1989 | 898.01 | 960.83 |
| 1990 | 955.05 | 999.85 |
| 1991 | 951.96 | 965.45 |
| 1992 | 1,076.59 | 1,078.59 |
| 1993 | 1,140.04 | 1,075.44 |
| 1994 | 1,106.91 | 1,135.75 |
| 1995 | 1,190.06 | 1,232.74 |
| 1996 | 1,246.66 | 1,245.68 |
| 1997 | 1,373.21 | 1,246.36 |
| 1998 | 1,221.84 | 1,210.49 |
| 1999 | 1,253.00 | 1,177.53 |
| 2000 | 1,447.65 | 1,308.59 |
| 2001 | 1,471.85 | 1,277.28 |
| 2002 | 1,383.73 | 1,222.55 |
| 2003 | 1,381.22 | 1,166.46 |
| 2004 | 1,275.89 | 1,082.44 |
| 2005 | 1,318.95 | 1,151.84 |
| 2006 | 1,258.51 | 1,038.70 |
| 2007 | 1,023.42 | 792.77 |
| 2008 | 1,093.96 | 885.62 |
| 2009 | 1,168.93 | 865.52 |
| 2010 | 1,205.83 | 870.83 |
|
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