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year | consumption | change |
1980 | 1.08 | NA |
1981 | 1.07 | -1.39% |
1982 | 1.01 | -5.44% |
1983 | 1.02 | 0.69% |
1984 | 1.05 | 3.05% |
1985 | 1.07 | 1.81% |
1986 | 1.07 | 0.09% |
1987 | 1.02 | -4.69% |
1988 | 1.10 | 7.96% |
1989 | 1.11 | 1.46% |
1990 | 1.15 | 3.41% |
1991 | 1.21 | 4.60% |
1992 | 1.19 | -1.49% |
1993 | 1.23 | 3.20% |
1994 | 1.22 | -0.73% |
1995 | 1.27 | 4.11% |
1996 | 1.32 | 4.58% |
1997 | 1.34 | 0.83% |
1998 | 1.36 | 2.10% |
1999 | 1.37 | 0.51% |
2000 | 1.35 | -1.17% |
2001 | 1.41 | 4.36% |
2002 | 1.42 | 0.14% |
2003 | 1.43 | 1.34% |
2004 | 1.48 | 3.00% |
2005 | 1.53 | 3.45% |
2006 | 1.52 | -0.52% |
2007 | 1.50 | -1.18% |
2008 | 1.50 | -0.20% |
2009 | 1.44 | -3.87% |
2010 | 1.49 | 3.47% |
2011 | 1.40 | -5.97% |
2012 | 1.44 | 2.85% |
2013 | 1.46 | 1.25% |
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