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year | consumption | change |
1993 | 1.61 | NA |
1994 | 1.54 | -4.23% |
1995 | 1.58 | 2.27% |
1996 | 1.67 | 5.90% |
1997 | 1.47 | -12.22% |
1998 | 1.42 | -2.94% |
1999 | 1.33 | -6.54% |
2000 | 1.39 | 4.59% |
2001 | 1.44 | 3.31% |
2002 | 1.43 | -0.14% |
2003 | 1.50 | 4.46% |
2004 | 1.52 | 1.13% |
2005 | 1.54 | 1.72% |
2006 | 1.59 | 3.31% |
2007 | 1.64 | 2.76% |
2008 | 1.63 | -0.67% |
2009 | 1.53 | -5.97% |
2010 | 1.59 | 4.19% |
2011 | 1.76 | 10.49% |
2012 | 1.74 | -1.19% |
2013 | 1.71 | -1.67% |
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