|
| 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 | 554.46 | NA |
| 1993 | 669.10 | 20.68 % |
| 1994 | 473.99 | -29.16 % |
| 1995 | 286.60 | -39.53 % |
| 1996 | 272.27 | -5.00 % |
| 1997 | 229.28 | -15.79 % |
| 1998 | 173.06 | -24.52 % |
| 1999 | 152.12 | -12.10 % |
| 2000 | 119.05 | -21.74 % |
| 2001 | 152.12 | 27.78 % |
| 2002 | 123.46 | -18.84 % |
| 2003 | 117.95 | -4.46 % |
| 2004 | 112.44 | -4.67 % |
| 2005 | 139.99 | 24.51 % |
| 2006 | 149.91 | 7.09 % |
| 2007 | 182.98 | 22.06 % |
| 2008 | 184.09 | 0.60 % |
| 2009 | 148.81 | -19.16 % |
| 2010 | 187.39 | 25.93 % |
| 2011 | 304.24 | 62.35 % |
|
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