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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 | .00 | .00 |
| 1992 | .00 | .00 |
| 1993 | .01 | .00 |
| 1994 | .01 | .00 |
| 1995 | .01 | .00 |
| 1996 | .03 | .00 |
| 1997 | .11 | .00 |
| 1998 | .17 | .00 |
| 1999 | .20 | .00 |
| 2000 | .34 | .00 |
| 2001 | .36 | .00 |
| 2002 | .47 | .05 |
| 2003 | .46 | .05 |
| 2004 | .74 | .01 |
| 2005 | .79 | .05 |
| 2006 | .76 | .05 |
| 2007 | .83 | .06 |
| 2008 | .93 | .07 |
| 2009 | .91 | .06 |
| 2010 | .87 | .07 |
| 2011 | .84 | .07 |
| 2012 | .85 | .08 |
| 2013 | .80 | .06 |
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