|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | .01 | NA |
| 1988 | | NA |
| 1989 | .13 | NA |
| 1990 | .13 | 0.00 % |
| 1991 | .13 | 0.00 % |
| 1992 | .13 | -0.28 % |
| 1993 | .01 | -94.63 % |
| 1994 | .13 | 1,766.67 % |
| 1995 | .13 | 0.00 % |
| 1996 | .13 | -0.28 % |
| 1997 | .13 | 0.28 % |
| 1998 | .13 | 0.00 % |
| 1999 | .13 | 0.00 % |
| 2000 | .16 | 24.66 % |
| 2001 | .16 | 0.27 % |
| 2002 | .16 | 0.00 % |
| 2003 | .16 | 0.00 % |
| 2004 | .03 | -80.06 % |
| 2005 | .16 | 401.42 % |
| 2006 | .06 | -60.00 % |
| 2007 | .06 | 0.00 % |
| 2008 | .07 | 10.01 % |
| 2009 | .07 | 0.00 % |
| 2010 | .07 | 0.00 % |
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