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year | consumption | change |
1992 | 5.30 | NA |
1993 | 5.40 | 1.89 % |
1994 | 6.60 | 22.22 % |
1995 | 5.70 | -13.64 % |
1996 | 6.50 | 14.04 % |
1997 | 7.10 | 9.23 % |
1998 | 6.80 | -4.23 % |
1999 | 6.50 | -4.41 % |
2000 | 6.50 | 0.00 % |
2001 | 7.80 | 20.00 % |
2002 | 7.20 | -7.69 % |
2003 | 7.10 | -1.39 % |
2004 | 6.60 | -7.04 % |
2005 | 6.70 | 1.52 % |
2006 | 7.10 | 5.97 % |
2007 | 7.50 | 5.63 % |
2008 | 7.40 | -1.33 % |
2009 | 6.80 | -8.11 % |
2010 | 6.40 | -5.88 % |
2011 | 6.00 | -6.25 % |
2012 | 5.80 | -3.33 % |
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