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year | consumption | change |
1980 | 2.07 | NA |
1981 | 2.02 | -2.56% |
1982 | 1.88 | -6.75% |
1983 | 1.92 | 1.92% |
1984 | 2.03 | 5.80% |
1985 | 2.16 | 6.61% |
1986 | 2.19 | 1.44% |
1987 | 2.26 | 3.10% |
1988 | 2.22 | -1.86% |
1989 | 2.19 | -1.35% |
1990 | 2.21 | 1.10% |
1991 | 2.21 | -0.14% |
1992 | 2.24 | 1.45% |
1993 | 2.24 | -0.18% |
1994 | 2.26 | 0.94% |
1995 | 2.30 | 2.08% |
1996 | 2.26 | -1.82% |
1997 | 2.31 | 2.30% |
1998 | 2.39 | 3.28% |
1999 | 2.35 | -1.67% |
2000 | 2.26 | -4.00% |
2001 | 2.39 | 6.12% |
2002 | 2.26 | -5.76% |
2003 | 2.14 | -5.01% |
2004 | 2.31 | 7.84% |
2005 | 2.33 | 0.74% |
2006 | 2.21 | -5.20% |
2007 | 2.24 | 1.59% |
2008 | 2.18 | -2.72% |
2009 | 2.06 | -5.78% |
2010 | 2.18 | 5.89% |
2011 | 2.14 | -1.61% |
2012 | 2.22 | 3.55% |
2013 | 2.12 | -4.56% |
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