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year | consumption | change |
1980 | 3.70 | NA |
1981 | 3.79 | 2.63% |
1982 | 4.20 | 10.79% |
1983 | 4.08 | -2.95% |
1984 | 4.15 | 1.72% |
1985 | 4.37 | 5.45% |
1986 | 4.30 | -1.67% |
1987 | 4.42 | 2.77% |
1988 | 4.50 | 1.77% |
1989 | 4.75 | 5.58% |
1990 | 4.64 | -2.36% |
1991 | 4.97 | 7.29% |
1992 | 5.07 | 2.01% |
1993 | 5.21 | 2.60% |
1994 | 5.42 | 4.03% |
1995 | 5.33 | -1.66% |
1996 | 5.53 | 3.79% |
1997 | 5.68 | 2.70% |
1998 | 5.99 | 5.53% |
1999 | 6.12 | 2.15% |
2000 | 6.35 | 3.74% |
2001 | 6.31 | -0.63% |
2002 | 6.32 | 0.17% |
2003 | 6.43 | 1.74% |
2004 | 6.45 | 0.28% |
2005 | 6.69 | 3.68% |
2006 | 6.92 | 3.47% |
2007 | 7.14 | 3.24% |
2008 | 7.24 | 1.44% |
2009 | 6.96 | -3.96% |
2010 | 7.29 | 4.74% |
2011 | 7.53 | 3.27% |
2012 | 7.50 | -0.36% |
2013 | 7.74 | 3.27% |
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