|
| year | production | consumption |
| 1980 | | |
| 1981 | | |
| 1982 | | |
| 1983 | | |
| 1984 | | |
| 1985 | | |
| 1986 | | |
| 1987 | | |
| 1988 | | |
| 1989 | | |
| 1990 | | |
| 1991 | | |
| 1992 | 348,764.70 | 325,763.90 |
| 1993 | 315,631.40 | 312,686.10 |
| 1994 | 280,687.10 | 284,421.70 |
| 1995 | 270,868.80 | 270,035.40 |
| 1996 | 264,925.10 | 278,241.00 |
| 1997 | 252,838.30 | 253,145.80 |
| 1998 | 241,034.70 | 238,254.70 |
| 1999 | 259,241.60 | 247,123.90 |
| 2000 | 264,911.90 | 252,512.00 |
| 2001 | 262,392.00 | 230,630.00 |
| 2002 | 261,887.10 | 240,234.40 |
| 2003 | 283,270.90 | 243,426.70 |
| 2004 | 285,436.90 | 235,114.20 |
| 2005 | 311,822.90 | 233,491.60 |
| 2006 | 313,680.30 | 240,254.30 |
| 2007 | 318,591.10 | 230,401.80 |
| 2008 | 336,163.10 | 249,795.90 |
| 2009 | 343,747.00 | 243,602.00 |
| 2010 | 358,932.40 | 248,728.80 |
| 2011 | 367,985.70 | 256,690.80 |
|
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