|
| 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 | 374.84 | NA |
| 1993 | 288.70 | -22.98 % |
| 1994 | 241.17 | -16.46 % |
| 1995 | 228.08 | -5.43 % |
| 1996 | 206.03 | -9.67 % |
| 1997 | 186.04 | -9.70 % |
| 1998 | 170.99 | -8.09 % |
| 1999 | 149.70 | -12.45 % |
| 2000 | 139.77 | -6.64 % |
| 2001 | 130.33 | -6.75 % |
| 2002 | 123.44 | -5.29 % |
| 2003 | 142.83 | 15.71 % |
| 2004 | 158.46 | 10.94 % |
| 2005 | 171.30 | 8.10 % |
| 2006 | 174.28 | 1.74 % |
| 2007 | 175.66 | 0.79 % |
| 2008 | 157.28 | -10.46 % |
| 2009 | 182.53 | 16.05 % |
| 2010 | 152.41 | -16.50 % |
| 2011 | 194.00 | 27.29 % |
|
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