|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .14 | NA |
| 1987 | .14 | 0.00 % |
| 1988 | .26 | 85.22 % |
| 1989 | .27 | 0.27 % |
| 1990 | .27 | 0.00 % |
| 1991 | .39 | 47.54 % |
| 1992 | .31 | -22.01 % |
| 1993 | .31 | 0.27 % |
| 1994 | .31 | 0.00 % |
| 1995 | .31 | 0.00 % |
| 1996 | .31 | -0.27 % |
| 1997 | .31 | 0.27 % |
| 1998 | .31 | 0.00 % |
| 1999 | .31 | 0.00 % |
| 2000 | .41 | 32.97 % |
| 2001 | .41 | 0.27 % |
| 2002 | .43 | 5.00 % |
| 2003 | .43 | 0.00 % |
| 2004 | .45 | 4.48 % |
| 2005 | .49 | 9.39 % |
| 2006 | .45 | -8.33 % |
| 2007 | .47 | 4.55 % |
| 2008 | .54 | 14.34 % |
| 2009 | .65 | 21.61 % |
| 2010 | .65 | 0.00 % |
|
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