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year | consumption | change |
1980 | 5.80 | NA |
1981 | 6.30 | 8.62% |
1982 | 6.20 | -1.59% |
1983 | 6.30 | 1.61% |
1984 | 6.30 | 0.00% |
1985 | 6.30 | 0.00% |
1986 | 6.20 | -1.59% |
1987 | 6.60 | 6.45% |
1988 | 6.70 | 1.52% |
1989 | 5.10 | -23.88% |
1990 | 6.10 | 19.61% |
1991 | 6.00 | -1.64% |
1992 | 6.00 | 0.00% |
1993 | 6.00 | 0.00% |
1994 | 6.00 | 0.00% |
1995 | 6.10 | 1.67% |
1996 | 5.70 | -6.56% |
1997 | 6.50 | 14.04% |
1998 | 6.30 | -3.08% |
1999 | 5.90 | -6.35% |
2000 | 6.10 | 3.39% |
2001 | 6.50 | 6.56% |
2002 | 7.10 | 9.23% |
2003 | 7.50 | 5.63% |
2004 | 8.20 | 9.33% |
2005 | 8.60 | 4.88% |
2006 | 8.70 | 1.16% |
2007 | 8.20 | -5.75% |
2008 | 7.50 | -8.54% |
2009 | 7.40 | -1.33% |
2010 | 7.90 | 6.76% |
2011 | 8.20 | 3.80% |
2012 | 10.00 | 21.95% |
2013 | 11.00 | 10.00% |
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