|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 202.51 | NA |
| 1993 | 194.03 | -4.19 % |
| 1994 | 186.60 | -3.83 % |
| 1995 | 178.54 | -4.32 % |
| 1996 | 133.54 | -25.20 % |
| 1997 | 128.59 | -3.71 % |
| 1998 | 145.84 | 13.41 % |
| 1999 | 149.46 | 2.48 % |
| 2000 | 136.89 | -8.41 % |
| 2001 | 119.89 | -12.42 % |
| 2002 | 110.35 | -7.96 % |
| 2003 | 110.78 | 0.39 % |
| 2004 | 112.60 | 1.65 % |
| 2005 | 115.35 | 2.44 % |
| 2006 | 114.38 | -0.85 % |
| 2007 | 109.40 | -4.35 % |
| 2008 | 84.41 | -22.84 % |
| 2009 | 79.87 | -5.38 % |
| 2010 | 78.09 | -2.23 % |
| 2011 | 168.00 | 115.14 % |
|
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