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year | consumption | change |
1986 | 1.70 | NA |
1987 | 1.60 | -5.88 % |
1988 | 1.20 | -25.00 % |
1989 | 1.30 | 8.33 % |
1990 | 1.40 | 7.69 % |
1991 | 1.40 | 0.00 % |
1992 | 1.50 | 7.14 % |
1993 | 1.60 | 6.67 % |
1994 | 2.60 | 62.50 % |
1995 | 1.30 | -50.00 % |
1996 | 3.10 | 138.46 % |
1997 | 2.90 | -6.45 % |
1998 | 2.40 | -17.24 % |
1999 | 2.50 | 4.17 % |
2000 | 2.10 | -16.00 % |
2001 | 2.10 | 0.00 % |
2002 | 2.30 | 9.52 % |
2003 | 2.40 | 4.35 % |
2004 | 2.40 | 0.00 % |
2005 | 2.40 | 0.00 % |
2006 | 2.60 | 8.33 % |
2007 | 3.20 | 23.08 % |
2008 | 2.70 | -15.63 % |
2009 | 2.40 | -11.11 % |
2010 | 2.60 | 8.33 % |
2011 | 2.70 | 3.85 % |
2012 | 2.80 | 3.70 % |
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