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year | consumption | change |
1986 | 1.10 | NA |
1987 | 2.00 | 81.82 % |
1988 | 2.00 | 0.00 % |
1989 | 3.10 | 55.00 % |
1990 | 2.50 | -19.35 % |
1991 | 2.90 | 16.00 % |
1992 | 1.60 | -44.83 % |
1993 | 1.40 | -12.50 % |
1994 | 1.50 | 7.14 % |
1995 | 1.50 | 0.00 % |
1996 | 1.50 | 0.00 % |
1997 | 1.60 | 6.67 % |
1998 | 1.60 | 0.00 % |
1999 | 2.30 | 43.75 % |
2000 | 3.00 | 30.43 % |
2001 | 2.20 | -26.67 % |
2002 | 3.20 | 45.45 % |
2003 | 4.50 | 40.63 % |
2004 | 4.80 | 6.67 % |
2005 | 4.60 | -4.17 % |
2006 | 4.00 | -13.04 % |
2007 | 4.00 | 0.00 % |
2008 | 4.20 | 5.00 % |
2009 | 4.30 | 2.38 % |
2010 | 4.60 | 6.98 % |
2011 | 3.90 | -15.22 % |
2012 | 3.40 | -12.82 % |
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