|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | .21 | NA |
| 1991 | .28 | 30.00 % |
| 1992 | .25 | -7.94 % |
| 1993 | .42 | 67.12 % |
| 1994 | .42 | 0.00 % |
| 1995 | .42 | 0.00 % |
| 1996 | .42 | -0.27 % |
| 1997 | .42 | 0.27 % |
| 1998 | .42 | 0.00 % |
| 1999 | .42 | 0.00 % |
| 2000 | .44 | 4.71 % |
| 2001 | .44 | 0.28 % |
| 2002 | .44 | 0.00 % |
| 2003 | .47 | 4.76 % |
| 2004 | .44 | -4.81 % |
| 2005 | .51 | 14.60 % |
| 2006 | .47 | -8.33 % |
| 2007 | .47 | 0.00 % |
| 2008 | .48 | 2.27 % |
| 2009 | .02 | -95.56 % |
| 2010 | .02 | 0.00 % |
|
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