|
| year | consumption | change |
| 1980 | 194.01 | NA |
| 1981 | 180.78 | -6.82 % |
| 1982 | 180.78 | 0.00 % |
| 1983 | 112.44 | -37.80 % |
| 1984 | 137.79 | 22.55 % |
| 1985 | 182.98 | 32.80 % |
| 1986 | 189.60 | 3.61 % |
| 1987 | 181.88 | -4.07 % |
| 1988 | 181.88 | 0.00 % |
| 1989 | 181.88 | 0.00 % |
| 1990 | 176.37 | -3.03 % |
| 1991 | 135.72 | -23.05 % |
| 1992 | 110.78 | -18.38 % |
| 1993 | 54.84 | -50.50 % |
| 1994 | 200.90 | 266.33 % |
| 1995 | 188.77 | -6.04 % |
| 1996 | 142.61 | -24.45 % |
| 1997 | 234.42 | 64.37 % |
| 1998 | 234.42 | 0.00 % |
| 1999 | 242.99 | 3.66 % |
| 2000 | 221.59 | -8.81 % |
| 2001 | 225.65 | 1.83 % |
| 2002 | 203.09 | -10.00 % |
| 2003 | 180.52 | -11.11 % |
| 2004 | 175.41 | -2.83 % |
| 2005 | 116.75 | -33.44 % |
| 2006 | 170.42 | 45.97 % |
| 2007 | 177.40 | 4.10 % |
| 2008 | 182.21 | 2.71 % |
| 2009 | 141.59 | -22.29 % |
| 2010 | 146.05 | 3.14 % |
| 2011 | 146.05 | 0.00 % |
|
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