|
| 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 | 580.92 | NA |
| 1993 | 311.95 | -46.30 % |
| 1994 | 403.45 | 29.33 % |
| 1995 | 48.50 | -87.98 % |
| 1996 | 27.56 | -43.18 % |
| 1997 | 19.18 | -30.40 % |
| 1998 | 38.58 | 101.15 % |
| 1999 | 30.86 | -20.00 % |
| 2000 | 29.76 | -3.57 % |
| 2001 | 25.35 | -14.81 % |
| 2002 | 25.35 | 0.00 % |
| 2003 | 54.01 | 113.04 % |
| 2004 | 15.43 | -71.43 % |
| 2005 | 19.84 | 28.57 % |
| 2006 | 17.64 | -11.11 % |
| 2007 | 52.91 | 200.00 % |
| 2008 | 131.18 | 147.92 % |
| 2009 | 249.12 | 89.92 % |
| 2010 | 124.56 | -50.00 % |
| 2011 | 98.11 | -21.24 % |
|
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