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year | consumption | change |
1986 | 7.20 | NA |
1987 | 5.90 | -18.06% |
1988 | 5.60 | -5.08% |
1989 | 9.10 | 62.50% |
1990 | 7.90 | -13.19% |
1991 | 8.20 | 3.80% |
1992 | 8.10 | -1.22% |
1993 | 8.20 | 1.23% |
1994 | 7.80 | -4.88% |
1995 | 7.90 | 1.28% |
1996 | 9.00 | 13.92% |
1997 | 5.30 | -41.11% |
1998 | 9.30 | 75.47% |
1999 | 9.90 | 6.45% |
2000 | 11.00 | 11.11% |
2001 | 9.50 | -13.64% |
2002 | 9.00 | -5.26% |
2003 | 7.90 | -12.22% |
2004 | 8.00 | 1.27% |
2005 | 9.10 | 13.75% |
2006 | 10.00 | 9.89% |
2007 | 10.00 | 0.00% |
2008 | 8.90 | -11.00% |
2009 | 11.00 | 23.60% |
2010 | 13.00 | 18.18% |
2011 | 13.00 | 0.00% |
2012 | 14.00 | 7.69% |
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