|
| year | consumption | change |
| 1984 | .16 | NA |
| 1985 | .16 | 0.27 % |
| 1986 | .16 | 0.00 % |
| 1987 | .07 | -60.00 % |
| 1988 | .20 | 199.19 % |
| 1989 | .16 | -16.44 % |
| 1990 | .07 | -60.00 % |
| 1991 | .10 | 50.01 % |
| 1992 | .16 | 66.21 % |
| 1993 | .26 | 60.44 % |
| 1994 | .14 | -45.83 % |
| 1995 | .92 | 546.14 % |
| 1996 | .70 | -24.02 % |
| 1997 | 1.57 | 124.05 % |
| 1998 | 1.28 | -18.18 % |
| 1999 | 1.15 | -10.68 % |
| 2000 | 1.04 | -9.34 % |
| 2001 | .41 | -60.95 % |
| 2002 | .26 | -35.14 % |
| 2003 | .15 | -41.67 % |
| 2004 | .01 | -92.88 % |
| 2005 | .02 | 100.55 % |
| 2006 | .03 | 50.00 % |
| 2007 | -.01 | -133.33 % |
| 2008 | .02 | -299.45 % |
| 2009 | .03 | 50.41 % |
| 2010 | .03 | 0.00 % |
|
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