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year | consumption | change |
1986 | 1.40 | NA |
1987 | 1.80 | 28.57% |
1988 | 2.20 | 22.22% |
1989 | 2.50 | 13.64% |
1990 | 2.70 | 8.00% |
1991 | 3.20 | 18.52% |
1992 | 4.00 | 25.00% |
1993 | 3.90 | -2.50% |
1994 | 3.90 | 0.00% |
1995 | 3.90 | 0.00% |
1996 | 3.90 | 0.00% |
1997 | 4.70 | 20.51% |
1998 | 5.20 | 10.64% |
1999 | 5.20 | 0.00% |
2000 | 8.00 | 53.85% |
2001 | 5.00 | -37.50% |
2002 | 5.00 | 0.00% |
2003 | 5.10 | 2.00% |
2004 | 6.70 | 31.37% |
2005 | 7.00 | 4.48% |
2006 | 7.30 | 4.29% |
2007 | 7.50 | 2.74% |
2008 | 8.50 | 13.33% |
2009 | 8.20 | -3.53% |
2010 | 8.60 | 4.88% |
2011 | 8.20 | -4.65% |
2012 | 8.20 | 0.00% |
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