|
| year | production | consumption |
| 1984 | 362.57 | 1,572.42 |
| 1985 | 390.80 | 1,598.91 |
| 1986 | 417.29 | 1,512.48 |
| 1987 | 448.50 | 1,611.73 |
| 1988 | 498.94 | 1,655.93 |
| 1989 | 554.04 | 1,668.28 |
| 1990 | 499.11 | 1,556.08 |
| 1991 | 535.83 | 1,688.59 |
| 1992 | 606.90 | 1,755.28 |
| 1993 | 591.53 | 1,734.02 |
| 1994 | 611.39 | 1,879.70 |
| 1995 | 654.20 | 1,899.38 |
| 1996 | 662.47 | 2,011.86 |
| 1997 | 690.87 | 2,037.82 |
| 1998 | 673.75 | 1,952.09 |
| 1999 | 683.76 | 2,195.00 |
| 2000 | 704.87 | 2,230.83 |
| 2001 | 666.64 | 2,044.31 |
| 2002 | 670.96 | 2,162.57 |
| 2003 | 657.76 | 2,074.11 |
| 2004 | 644.74 | 2,132.48 |
| 2005 | 572.68 | 2,029.68 |
| 2006 | 627.29 | 2,052.40 |
| 2007 | 654.53 | 2,191.32 |
| 2008 | 629.59 | 2,044.39 |
| 2009 | 623.21 | 2,126.94 |
| 2010 | 658.78 | 2,265.27 |
|
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