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year | consumption | change |
1986 | 4.60 | NA |
1987 | 4.60 | 0.00% |
1988 | 3.10 | -32.61% |
1989 | 3.50 | 12.90% |
1990 | 3.40 | -2.86% |
1991 | 3.10 | -8.82% |
1992 | 3.50 | 12.90% |
1993 | 4.00 | 14.29% |
1994 | 4.50 | 12.50% |
1995 | 4.90 | 8.89% |
1996 | 4.20 | -14.29% |
1997 | 6.00 | 42.86% |
1998 | 7.20 | 20.00% |
1999 | 7.20 | 0.00% |
2000 | 8.00 | 11.11% |
2001 | 7.40 | -7.50% |
2002 | 7.90 | 6.76% |
2003 | 8.90 | 12.66% |
2004 | 9.20 | 3.37% |
2005 | 9.40 | 2.17% |
2006 | 8.80 | -6.38% |
2007 | 8.60 | -2.27% |
2008 | 8.60 | 0.00% |
2009 | 8.90 | 3.49% |
2010 | 12.00 | 34.83% |
2011 | 8.80 | -26.67% |
2012 | 13.00 | 47.73% |
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