|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .03 | NA |
| 1987 | .07 | 129.57 % |
| 1988 | .06 | -7.33 % |
| 1989 | .04 | -30.58 % |
| 1990 | | NA |
| 1991 | .13 | NA |
| 1992 | .18 | 44.56 % |
| 1993 | .22 | 21.21 % |
| 1994 | .25 | 14.29 % |
| 1995 | .29 | 12.50 % |
| 1996 | .32 | 10.81 % |
| 1997 | .70 | 120.61 % |
| 1998 | 1.24 | 77.27 % |
| 1999 | 1.24 | 0.00 % |
| 2000 | 1.27 | 2.28 % |
| 2001 | 1.56 | 22.84 % |
| 2002 | 1.78 | 14.45 % |
| 2003 | 2.03 | 14.12 % |
| 2004 | 2.09 | 2.84 % |
| 2005 | 2.16 | 3.31 % |
| 2006 | 2.89 | 33.82 % |
| 2007 | 2.96 | 2.20 % |
| 2008 | 3.02 | 2.15 % |
| 2009 | 4.48 | 48.42 % |
| 2010 | 5.05 | 12.77 % |
|
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