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Loading...
| year | production | consumption |
| 1980 | .00 | .00 |
| 1981 | .00 | .00 |
| 1982 | .00 | .00 |
| 1983 | .00 | .00 |
| 1984 | .00 | .00 |
| 1985 | .00 | .00 |
| 1986 | .00 | .00 |
| 1987 | .00 | .00 |
| 1988 | .00 | .00 |
| 1989 | .00 | .00 |
| 1990 | .00 | .00 |
| 1991 | 505.00 | 491.00 |
| 1992 | 504.00 | 486.00 |
| 1993 | 493.00 | 477.00 |
| 1994 | 496.00 | 475.00 |
| 1995 | 503.00 | 483.00 |
| 1996 | 520.00 | 489.00 |
| 1997 | 517.00 | 493.00 |
| 1998 | 522.00 | 497.00 |
| 1999 | 519.00 | 497.00 |
| 2000 | 540.00 | 509.00 |
| 2001 | 550.00 | 520.00 |
| 2002 | 550.00 | 533.00 |
| 2003 | 572.00 | 542.00 |
| 2004 | 579.00 | 548.00 |
| 2005 | 577.00 | 543.00 |
| 2006 | 593.00 | 548.00 |
| 2007 | 598.00 | 552.00 |
| 2008 | 594.00 | 544.00 |
| 2009 | 552.00 | 514.00 |
| 2010 | 586.00 | 547.00 |
| 2011 | 566.00 | 538.00 |
| 2012 | 585.00 | 540.00 |
| 2013 | 591.00 | 534.00 |
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