|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .65 | NA |
| 1987 | .51 | -21.43 % |
| 1988 | .93 | 81.24 % |
| 1989 | .54 | -42.32 % |
| 1990 | .56 | 4.35 % |
| 1991 | .58 | 4.17 % |
| 1992 | .61 | 3.72 % |
| 1993 | .75 | 23.41 % |
| 1994 | .75 | 0.00 % |
| 1995 | .77 | 3.13 % |
| 1996 | .77 | -0.27 % |
| 1997 | .79 | 3.31 % |
| 1998 | .79 | 0.00 % |
| 1999 | .79 | 0.00 % |
| 2000 | .84 | 5.59 % |
| 2001 | .84 | 0.27 % |
| 2002 | .86 | 2.78 % |
| 2003 | .86 | 0.00 % |
| 2004 | .82 | -5.66 % |
| 2005 | .89 | 8.87 % |
| 2006 | .87 | -1.51 % |
| 2007 | 1.17 | 33.89 % |
| 2008 | 1.18 | 0.44 % |
| 2009 | 1.24 | 5.30 % |
| 2010 | 1.24 | 0.00 % |
|
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