|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.95 | NA |
| 1987 | .49 | -74.82 % |
| 1988 | .65 | 33.31 % |
| 1989 | .58 | -11.64 % |
| 1990 | .50 | -13.53 % |
| 1991 | 1.10 | 120.40 % |
| 1992 | 1.94 | 76.44 % |
| 1993 | 2.03 | 4.63 % |
| 1994 | 2.05 | 1.04 % |
| 1995 | 1.10 | -46.39 % |
| 1996 | 1.10 | -0.27 % |
| 1997 | 2.39 | 117.90 % |
| 1998 | 2.27 | -5.31 % |
| 1999 | .47 | -79.44 % |
| 2000 | .46 | -0.27 % |
| 2001 | .36 | -22.51 % |
| 2002 | .15 | -58.82 % |
| 2003 | .15 | 0.00 % |
| 2004 | .15 | -0.28 % |
| 2005 | .15 | 0.28 % |
| 2006 | .15 | 0.00 % |
| 2007 | .15 | 0.00 % |
| 2008 | .02 | -85.71 % |
| 2009 | .25 | 1,099.91 % |
| 2010 | .08 | -66.67 % |
|
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