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year | consumption | change |
1986 | 2.10 | NA |
1987 | 3.20 | 52.38 % |
1988 | 2.40 | -25.00 % |
1989 | 2.80 | 16.67 % |
1990 | 2.60 | -7.14 % |
1991 | 2.10 | -19.23 % |
1992 | 2.50 | 19.05 % |
1993 | 2.50 | 0.00 % |
1994 | 2.60 | 4.00 % |
1995 | 2.60 | 0.00 % |
1996 | 2.60 | 0.00 % |
1997 | 2.60 | 0.00 % |
1998 | 2.70 | 3.85 % |
1999 | 2.80 | 3.70 % |
2000 | 2.80 | 0.00 % |
2001 | 3.30 | 17.86 % |
2002 | 3.80 | 15.15 % |
2003 | 4.10 | 7.89 % |
2004 | 4.40 | 7.32 % |
2005 | 4.70 | 6.82 % |
2006 | 5.00 | 6.38 % |
2007 | 5.40 | 8.00 % |
2008 | 5.80 | 7.41 % |
2009 | 6.10 | 5.17 % |
2010 | 7.10 | 16.39 % |
2011 | 6.80 | -4.23 % |
2012 | 7.40 | 8.82 % |
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