|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .47 | NA |
| 1987 | .61 | 30.00 % |
| 1988 | .63 | 3.56 % |
| 1989 | .77 | 22.56 % |
| 1990 | .51 | -33.33 % |
| 1991 | .47 | -9.09 % |
| 1992 | .63 | 34.63 % |
| 1993 | .49 | -22.01 % |
| 1994 | .47 | -4.76 % |
| 1995 | .51 | 10.00 % |
| 1996 | .51 | -0.27 % |
| 1997 | .51 | 0.27 % |
| 1998 | .51 | 0.00 % |
| 1999 | .51 | 0.00 % |
| 2000 | .51 | -0.27 % |
| 2001 | .51 | 0.28 % |
| 2002 | .51 | 0.00 % |
| 2003 | .58 | 13.64 % |
| 2004 | .61 | 3.72 % |
| 2005 | .61 | 0.27 % |
| 2006 | .58 | -3.85 % |
| 2007 | .86 | 48.00 % |
| 2008 | .79 | -8.11 % |
| 2009 | .88 | 10.29 % |
| 2010 | .88 | 0.00 % |
|
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