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year | consumption | change |
1986 | 7.10 | NA |
1987 | 8.80 | 23.94% |
1988 | 8.90 | 1.14% |
1989 | 8.60 | -3.37% |
1990 | 8.10 | -5.81% |
1991 | 9.50 | 17.28% |
1992 | 9.50 | 0.00% |
1993 | 10.00 | 5.26% |
1994 | 10.00 | 0.00% |
1995 | 10.00 | 0.00% |
1996 | 11.00 | 10.00% |
1997 | 11.00 | 0.00% |
1998 | 12.00 | 9.09% |
1999 | 12.00 | 0.00% |
2000 | 12.00 | 0.00% |
2001 | 7.30 | -39.17% |
2002 | 7.00 | -4.11% |
2003 | 9.20 | 31.43% |
2004 | 10.00 | 8.70% |
2005 | 12.00 | 20.00% |
2006 | 11.00 | -8.33% |
2007 | 11.00 | 0.00% |
2008 | 12.00 | 9.09% |
2009 | 11.00 | -8.33% |
2010 | 12.00 | 9.09% |
2011 | 15.00 | 25.00% |
2012 | 10.00 | -33.33% |
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