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year | consumption | change |
1986 | 5.70 | NA |
1987 | 8.50 | 49.12% |
1988 | 9.20 | 8.24% |
1989 | 10.00 | 8.70% |
1990 | 9.20 | -8.00% |
1991 | 8.20 | -10.87% |
1992 | 9.00 | 9.76% |
1993 | 8.10 | -10.00% |
1994 | 8.50 | 4.94% |
1995 | 8.60 | 1.18% |
1996 | 9.90 | 15.12% |
1997 | 10.00 | 1.01% |
1998 | 10.00 | 0.00% |
1999 | 12.00 | 20.00% |
2000 | 11.00 | -8.33% |
2001 | 12.00 | 9.09% |
2002 | 13.00 | 8.33% |
2003 | 13.00 | 0.00% |
2004 | 15.00 | 15.38% |
2005 | 14.00 | -6.67% |
2006 | 13.00 | -7.14% |
2007 | 9.70 | -25.38% |
2008 | 8.70 | -10.31% |
2009 | 7.80 | -10.34% |
2010 | 7.60 | -2.56% |
2011 | 9.60 | 26.32% |
2012 | 5.60 | -41.67% |
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