|
| 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 | 16.53 | NA |
| 1992 | 13.23 | -20.00 % |
| 1993 | 99.21 | 650.00 % |
| 1994 | 110.23 | 11.11 % |
| 1995 | 17.64 | -84.00 % |
| 1996 | 15.43 | -12.50 % |
| 1997 | 12.13 | -21.43 % |
| 1998 | 18.74 | 54.55 % |
| 1999 | 6.61 | -64.71 % |
| 2000 | 3.31 | -50.00 % |
| 2001 | 4.41 | 33.33 % |
| 2002 | | NA |
| 2003 | 8.82 | NA |
| 2004 | 1.10 | -87.50 % |
| 2005 | 22.05 | 1,900.00 % |
| 2006 | 70.55 | 220.00 % |
| 2007 | 84.88 | 20.31 % |
| 2008 | 455.25 | 436.36 % |
| 2009 | 212.75 | -53.27 % |
| 2010 | 149.91 | -29.53 % |
| 2011 | 149.91 | 0.00 % |
|
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