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year | consumption | change |
1986 | 1.60 | NA |
1987 | 2.50 | 56.25 % |
1988 | 2.20 | -12.00 % |
1989 | 2.20 | 0.00 % |
1990 | 2.50 | 13.64 % |
1991 | 3.00 | 20.00 % |
1992 | 4.50 | 50.00 % |
1993 | 3.60 | -20.00 % |
1994 | 3.20 | -11.11 % |
1995 | 3.50 | 9.37 % |
1996 | 5.10 | 45.71 % |
1997 | 4.70 | -7.84 % |
1998 | 4.50 | -4.26 % |
1999 | 3.50 | -22.22 % |
2000 | 2.60 | -25.71 % |
2001 | 3.00 | 15.38 % |
2002 | 3.00 | 0.00 % |
2003 | 2.60 | -13.33 % |
2004 | 2.70 | 3.85 % |
2005 | 1.90 | -29.63 % |
2006 | 1.60 | -15.79 % |
2007 | 1.40 | -12.50 % |
2008 | 1.70 | 21.43 % |
2009 | 2.30 | 35.29 % |
2010 | 1.70 | -26.09 % |
2011 | 1.30 | -23.53 % |
2012 | 1.40 | 7.69 % |
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