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year | consumption | change |
1986 | 3.00 | NA |
1987 | 3.00 | 0.00 % |
1988 | 3.10 | 3.33 % |
1989 | 3.00 | -3.23 % |
1990 | 2.80 | -6.67 % |
1991 | 2.50 | -10.71 % |
1992 | 2.60 | 4.00 % |
1993 | 2.70 | 3.85 % |
1994 | 2.90 | 7.41 % |
1995 | 2.30 | -20.69 % |
1996 | 2.80 | 21.74 % |
1997 | 2.50 | -10.71 % |
1998 | 3.10 | 24.00 % |
1999 | 3.40 | 9.68 % |
2000 | 3.60 | 5.88 % |
2001 | 3.80 | 5.56 % |
2002 | 4.10 | 7.89 % |
2003 | 3.90 | -4.88 % |
2004 | 4.20 | 7.69 % |
2005 | 4.50 | 7.14 % |
2006 | 4.40 | -2.22 % |
2007 | 4.70 | 6.82 % |
2008 | 4.60 | -2.13 % |
2009 | 5.20 | 13.04 % |
2010 | 5.40 | 3.85 % |
2011 | 5.20 | -3.70 % |
2012 | 5.70 | 9.62 % |
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