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year | consumption | change |
1980 | 1.50 | NA |
1981 | 2.30 | 53.33 % |
1982 | 3.00 | 30.43 % |
1983 | 4.00 | 33.33 % |
1984 | 6.00 | 50.00 % |
1985 | 5.20 | -13.33 % |
1986 | 6.60 | 26.92 % |
1987 | 6.60 | 0.00 % |
1988 | 6.60 | 0.00 % |
1989 | 6.60 | 0.00 % |
1990 | 6.30 | -4.55 % |
1991 | 6.10 | -3.17 % |
1992 | 6.00 | -1.64 % |
1993 | 5.90 | -1.67 % |
1994 | 4.70 | -20.34 % |
1995 | 4.90 | 4.26 % |
1996 | 4.90 | 0.00 % |
1997 | 4.90 | 0.00 % |
1998 | 4.90 | 0.00 % |
1999 | 4.90 | 0.00 % |
2000 | 4.60 | -6.12 % |
2001 | 4.60 | 0.00 % |
2002 | 4.80 | 4.35 % |
2003 | 5.70 | 18.75 % |
2004 | 5.70 | 0.00 % |
2005 | 6.30 | 10.53 % |
2006 | 6.70 | 6.35 % |
2007 | 6.60 | -1.49 % |
2008 | 7.20 | 9.09 % |
2009 | 7.00 | -2.78 % |
2010 | 7.20 | 2.86 % |
2011 | 7.00 | -2.78 % |
2012 | 7.00 | 0.00 % |
2013 | 7.00 | 0.00 % |
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