|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .29 | NA |
| 1987 | .31 | 7.36 % |
| 1988 | .32 | 2.64 % |
| 1989 | .29 | -8.35 % |
| 1990 | .28 | -2.33 % |
| 1991 | .28 | 0.08 % |
| 1992 | .28 | -1.40 % |
| 1993 | .37 | 31.18 % |
| 1994 | .45 | 22.15 % |
| 1995 | .52 | 14.73 % |
| 1996 | .44 | -13.77 % |
| 1997 | .57 | 28.74 % |
| 1998 | .47 | -17.11 % |
| 1999 | .35 | -26.65 % |
| 2000 | .45 | 30.16 % |
| 2001 | .68 | 49.29 % |
| 2002 | .71 | 4.25 % |
| 2003 | 1.31 | 86.04 % |
| 2004 | .67 | -48.66 % |
| 2005 | .68 | 0.54 % |
| 2006 | .29 | -56.48 % |
| 2007 | .38 | 29.41 % |
| 2008 | 1.27 | 233.33 % |
| 2009 | 1.30 | 2.50 % |
| 2010 | 3.30 | 153.57 % |
|
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