|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .12 | NA |
| 1987 | .14 | 20.00 % |
| 1988 | .16 | 16.35 % |
| 1989 | .14 | -13.57 % |
| 1990 | .16 | 16.01 % |
| 1991 | .16 | 0.00 % |
| 1992 | .16 | -0.27 % |
| 1993 | .16 | 0.27 % |
| 1994 | .16 | 0.00 % |
| 1995 | .16 | 0.00 % |
| 1996 | .16 | -0.27 % |
| 1997 | .16 | 0.27 % |
| 1998 | .16 | 0.00 % |
| 1999 | .16 | 0.01 % |
| 2000 | .19 | 13.97 % |
| 2001 | .19 | 0.27 % |
| 2002 | .36 | 91.90 % |
| 2003 | .28 | -22.16 % |
| 2004 | .37 | 33.54 % |
| 2005 | .37 | 0.27 % |
| 2006 | .23 | -37.50 % |
| 2007 | .40 | 70.00 % |
| 2008 | .52 | 30.81 % |
| 2009 | .31 | -40.54 % |
| 2010 | .31 | 0.00 % |
|
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