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year | consumption | change |
1980 | 1.64 | NA |
1981 | 1.59 | -2.87% |
1982 | 1.68 | 5.53% |
1983 | 1.69 | 0.66% |
1984 | 1.84 | 8.64% |
1985 | 1.75 | -4.90% |
1986 | 1.90 | 8.88% |
1987 | 1.95 | 2.63% |
1988 | 1.95 | 0.10% |
1989 | 1.94 | -0.77% |
1990 | 1.88 | -2.94% |
1991 | 1.97 | 4.89% |
1992 | 2.04 | 3.24% |
1993 | 2.20 | 8.05% |
1994 | 2.24 | 1.82% |
1995 | 2.31 | 2.90% |
1996 | 2.39 | 3.51% |
1997 | 2.46 | 2.97% |
1998 | 2.57 | 4.52% |
1999 | 2.61 | 1.60% |
2000 | 2.67 | 2.15% |
2001 | 2.62 | -1.58% |
2002 | 2.48 | -5.56% |
2003 | 2.67 | 7.71% |
2004 | 2.78 | 4.05% |
2005 | 3.11 | 11.99% |
2006 | 3.31 | 6.50% |
2007 | 3.35 | 1.06% |
2008 | 3.48 | 3.94% |
2009 | 3.41 | -1.98% |
2010 | 3.54 | 3.78% |
2011 | 3.67 | 3.67% |
2012 | 3.65 | -0.44% |
2013 | 3.82 | 4.65% |
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