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year | consumption | change |
1980 | 2.10 | NA |
1981 | 1.87 | -10.93% |
1982 | 1.76 | -6.19% |
1983 | 1.74 | -0.85% |
1984 | 1.83 | 4.70% |
1985 | 1.90 | 4.33% |
1986 | 1.98 | 3.83% |
1987 | 2.05 | 3.79% |
1988 | 2.12 | 3.17% |
1989 | 2.16 | 1.79% |
1990 | 2.20 | 1.90% |
1991 | 2.28 | 3.69% |
1992 | 2.25 | -1.23% |
1993 | 2.24 | -0.36% |
1994 | 2.35 | 4.86% |
1995 | 2.41 | 2.64% |
1996 | 2.57 | 6.59% |
1997 | 2.64 | 2.64% |
1998 | 2.68 | 1.71% |
1999 | 2.64 | -1.49% |
2000 | 2.72 | 2.87% |
2001 | 2.68 | -1.43% |
2002 | 2.67 | -0.56% |
2003 | 2.78 | 4.35% |
2004 | 2.81 | 1.11% |
2005 | 2.77 | -1.39% |
2006 | 2.75 | -0.90% |
2007 | 2.75 | -0.04% |
2008 | 2.88 | 4.91% |
2009 | 2.67 | -7.56% |
2010 | 2.85 | 6.87% |
2011 | 2.68 | -5.97% |
2012 | 2.55 | -4.67% |
2013 | 2.61 | 2.31% |
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