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year | consumption | change |
1986 | 2.90 | NA |
1987 | 4.10 | 41.38% |
1988 | 4.10 | 0.00% |
1989 | 4.60 | 12.20% |
1990 | 4.90 | 6.52% |
1991 | 4.60 | -6.12% |
1992 | 2.50 | -45.65% |
1993 | 2.80 | 12.00% |
1994 | 2.80 | 0.00% |
1995 | 5.50 | 96.43% |
1996 | 6.30 | 14.55% |
1997 | 2.80 | -55.56% |
1998 | 2.90 | 3.57% |
1999 | 2.20 | -24.14% |
2000 | 2.50 | 13.64% |
2001 | 2.60 | 4.00% |
2002 | 2.30 | -11.54% |
2003 | 2.30 | 0.00% |
2004 | 2.30 | 0.00% |
2005 | 2.30 | 0.00% |
2006 | 2.10 | -8.70% |
2007 | 2.10 | 0.00% |
2008 | 2.20 | 4.76% |
2009 | 2.70 | 22.73% |
2010 | 2.30 | -14.81% |
2011 | 1.20 | -47.83% |
2012 | .80 | -33.33% |
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