|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .05 | NA |
| 1987 | .02 | -54.54 % |
| 1988 | .02 | -0.80 % |
| 1989 | .02 | 0.00 % |
| 1990 | .06 | 204.76 % |
| 1991 | .06 | -0.73 % |
| 1992 | .06 | -0.27 % |
| 1993 | .04 | -33.16 % |
| 1994 | .04 | 0.00 % |
| 1995 | .04 | 0.00 % |
| 1996 | | NA |
| 1997 | .01 | NA |
| 1998 | .08 | 784.69 % |
| 1999 | .08 | 0.00 % |
| 2000 | .08 | -2.52 % |
| 2001 | .09 | 5.89 % |
| 2002 | .09 | 0.00 % |
| 2003 | .13 | 44.94 % |
| 2004 | .08 | -33.52 % |
| 2005 | .08 | 0.27 % |
| 2006 | .11 | 25.00 % |
| 2007 | .11 | 0.00 % |
| 2008 | .11 | 0.00 % |
| 2009 | .11 | 0.00 % |
| 2010 | .11 | 0.00 % |
|
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