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year | consumption | change |
1980 | 2.49 | NA |
1981 | 2.81 | 12.51% |
1982 | 3.23 | 15.25% |
1983 | 3.25 | 0.46% |
1984 | 3.57 | 9.97% |
1985 | 3.56 | -0.28% |
1986 | 3.80 | 6.76% |
1987 | 3.82 | 0.42% |
1988 | 3.95 | 3.27% |
1989 | 3.59 | -9.05% |
1990 | 3.30 | -7.97% |
1991 | 3.68 | 11.36% |
1992 | 3.37 | -8.40% |
1993 | 3.87 | 15.02% |
1994 | 4.10 | 5.73% |
1995 | 4.17 | 1.78% |
1996 | 4.16 | -0.14% |
1997 | 4.46 | 7.21% |
1998 | 4.27 | -4.44% |
1999 | 4.63 | 8.49% |
2000 | 4.55 | -1.77% |
2001 | 4.60 | 1.19% |
2002 | 4.28 | -6.91% |
2003 | 4.74 | 10.82% |
2004 | 5.18 | 9.15% |
2005 | 5.08 | -1.93% |
2006 | 5.27 | 3.76% |
2007 | 5.45 | 3.34% |
2008 | 5.88 | 7.97% |
2009 | 5.48 | -6.79% |
2010 | 5.59 | 1.93% |
2011 | 5.83 | 4.42% |
2012 | 6.08 | 4.15% |
2013 | 5.77 | -5.07% |
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