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year | consumption | change |
1986 | 4.90 | NA |
1987 | 4.90 | 0.00 % |
1988 | 5.50 | 12.24 % |
1989 | 5.40 | -1.82 % |
1990 | 6.00 | 11.11 % |
1991 | 6.60 | 10.00 % |
1992 | 7.10 | 7.58 % |
1993 | 6.30 | -11.27 % |
1994 | 8.50 | 34.92 % |
1995 | 9.00 | 5.88 % |
1996 | 8.90 | -1.11 % |
1997 | 5.50 | -38.20 % |
1998 | 4.90 | -10.91 % |
1999 | 8.30 | 69.39 % |
2000 | 9.30 | 12.05 % |
2001 | 9.70 | 4.30 % |
2002 | 7.40 | -23.71 % |
2003 | 7.90 | 6.76 % |
2004 | 7.90 | 0.00 % |
2005 | 7.50 | -5.06 % |
2006 | 7.30 | -2.67 % |
2007 | 7.70 | 5.48 % |
2008 | 7.80 | 1.30 % |
2009 | 8.40 | 7.69 % |
2010 | 8.80 | 4.76 % |
2011 | 9.20 | 4.55 % |
2012 | 9.40 | 2.17 % |
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