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year | consumption | change |
1980 | 3.10 | NA |
1981 | 3.08 | -0.87% |
1982 | 3.35 | 8.84% |
1983 | 3.44 | 2.63% |
1984 | 3.25 | -5.50% |
1985 | 3.33 | 2.62% |
1986 | 3.39 | 1.71% |
1987 | 3.49 | 3.01% |
1988 | 3.75 | 7.28% |
1989 | 3.86 | 2.94% |
1990 | 3.92 | 1.63% |
1991 | 4.15 | 5.87% |
1992 | 4.13 | -0.55% |
1993 | 4.02 | -2.50% |
1994 | 4.18 | 3.85% |
1995 | 4.30 | 2.99% |
1996 | 4.40 | 2.25% |
1997 | 4.70 | 6.82% |
1998 | 4.93 | 4.92% |
1999 | 5.17 | 4.89% |
2000 | 5.50 | 6.32% |
2001 | 5.76 | 4.73% |
2002 | 5.83 | 1.32% |
2003 | 6.14 | 5.28% |
2004 | 6.36 | 3.61% |
2005 | 6.53 | 2.66% |
2006 | 6.58 | 0.73% |
2007 | 6.76 | 2.69% |
2008 | 6.54 | -3.30% |
2009 | 6.12 | -6.34% |
2010 | 6.24 | 1.90% |
2011 | 6.07 | -2.71% |
2012 | 5.99 | -1.22% |
2013 | 5.66 | -5.59% |
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