|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | .02 | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | .89 | NA |
| 1993 | | NA |
| 1994 | .11 | NA |
| 1995 | .11 | 0.00 % |
| 1996 | .21 | 99.45 % |
| 1997 | .21 | 0.27 % |
| 1998 | .89 | 320.00 % |
| 1999 | .89 | 0.00 % |
| 2000 | 1.56 | 75.71 % |
| 2001 | 1.57 | 0.27 % |
| 2002 | 1.57 | 0.00 % |
| 2003 | 1.57 | 0.00 % |
| 2004 | 1.14 | -27.23 % |
| 2005 | .72 | -36.86 % |
| 2006 | .72 | 0.00 % |
| 2007 | .72 | 0.00 % |
| 2008 | .72 | 0.00 % |
| 2009 | .72 | 0.00 % |
| 2010 | .70 | -2.94 % |
|
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