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year | consumption | change |
1980 | 1.66 | NA |
1981 | 2.03 | 21.77% |
1982 | 1.97 | -2.86% |
1983 | 2.12 | 7.93% |
1984 | 2.47 | 16.20% |
1985 | 2.71 | 9.85% |
1986 | 3.02 | 11.25% |
1987 | 3.07 | 1.92% |
1988 | 3.18 | 3.61% |
1989 | 3.13 | -1.82% |
1990 | 3.35 | 7.07% |
1991 | 3.50 | 4.54% |
1992 | 3.66 | 4.72% |
1993 | 3.78 | 3.06% |
1994 | 3.90 | 3.28% |
1995 | 3.83 | -1.90% |
1996 | 4.10 | 7.27% |
1997 | 4.37 | 6.38% |
1998 | 4.54 | 4.05% |
1999 | 4.60 | 1.30% |
2000 | 4.85 | 5.45% |
2001 | 5.14 | 5.89% |
2002 | 5.38 | 4.77% |
2003 | 5.76 | 7.00% |
2004 | 6.21 | 7.76% |
2005 | 6.53 | 5.12% |
2006 | 6.85 | 4.90% |
2007 | 6.90 | 0.73% |
2008 | 7.41 | 7.51% |
2009 | 7.67 | 3.49% |
2010 | 8.32 | 8.43% |
2011 | 8.86 | 6.48% |
2012 | 9.66 | 9.05% |
2013 | 9.65 | -0.11% |
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