|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.74 | NA |
| 1987 | .20 | -88.49 % |
| 1988 | .20 | 0.00 % |
| 1989 | .10 | -49.00 % |
| 1990 | .30 | 189.22 % |
| 1991 | .27 | -8.47 % |
| 1992 | 2.81 | 940.36 % |
| 1993 | 1.11 | -60.39 % |
| 1994 | 1.10 | -1.03 % |
| 1995 | .91 | -17.41 % |
| 1996 | 1.16 | 27.71 % |
| 1997 | .40 | -65.57 % |
| 1998 | .44 | 11.18 % |
| 1999 | .15 | -66.67 % |
| 2000 | .21 | 42.46 % |
| 2001 | .19 | -9.75 % |
| 2002 | .17 | -11.11 % |
| 2003 | .13 | -25.00 % |
| 2004 | .21 | 66.21 % |
| 2005 | .21 | 0.27 % |
| 2006 | 1.59 | 650.00 % |
| 2007 | 2.46 | 54.83 % |
| 2008 | 1.69 | -31.11 % |
| 2009 | 1.27 | -25.00 % |
| 2010 | 1.31 | 3.33 % |
|
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