|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .26 | NA |
| 1987 | 7.06 | 2,580.33 % |
| 1988 | .30 | -95.75 % |
| 1989 | .41 | 37.33 % |
| 1990 | .27 | -33.97 % |
| 1991 | .60 | 120.56 % |
| 1992 | .72 | 19.68 % |
| 1993 | 2.03 | 182.15 % |
| 1994 | .91 | -55.05 % |
| 1995 | .75 | -17.57 % |
| 1996 | .93 | 23.80 % |
| 1997 | .49 | -47.58 % |
| 1998 | 1.63 | 234.79 % |
| 1999 | .57 | -64.93 % |
| 2000 | .59 | 3.42 % |
| 2001 | .66 | 11.02 % |
| 2002 | .66 | 0.00 % |
| 2003 | .72 | 9.68 % |
| 2004 | .76 | 5.59 % |
| 2005 | .76 | 0.27 % |
| 2006 | .83 | 8.33 % |
| 2007 | .47 | -43.59 % |
| 2008 | .51 | 9.09 % |
| 2009 | .55 | 8.33 % |
| 2010 | .61 | 11.54 % |
|
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