|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .13 | NA |
| 1987 | .13 | 0.00 % |
| 1988 | .13 | -0.09 % |
| 1989 | .27 | 112.70 % |
| 1990 | .16 | -42.06 % |
| 1991 | .13 | -18.78 % |
| 1992 | .13 | -0.28 % |
| 1993 | .13 | 0.28 % |
| 1994 | .13 | 0.00 % |
| 1995 | .13 | 0.00 % |
| 1996 | .13 | -0.28 % |
| 1997 | .13 | 0.28 % |
| 1998 | .19 | 50.00 % |
| 1999 | .19 | 0.00 % |
| 2000 | .19 | -0.27 % |
| 2001 | .29 | 50.42 % |
| 2002 | .29 | 0.00 % |
| 2003 | .35 | 22.22 % |
| 2004 | .38 | 8.79 % |
| 2005 | .44 | 16.99 % |
| 2006 | .44 | 0.00 % |
| 2007 | .44 | 0.00 % |
| 2008 | .38 | -14.29 % |
| 2009 | .48 | 25.00 % |
| 2010 | .44 | -6.67 % |
|
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