|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | | NA |
| 1993 | .10 | NA |
| 1994 | .10 | 0.00 % |
| 1995 | .03 | -66.66 % |
| 1996 | .26 | 697.75 % |
| 1997 | .59 | 125.61 % |
| 1998 | .72 | 22.22 % |
| 1999 | .15 | -78.79 % |
| 2000 | .12 | -21.64 % |
| 2001 | .13 | 9.39 % |
| 2002 | .11 | -16.67 % |
| 2003 | .11 | 0.00 % |
| 2004 | .07 | -40.17 % |
| 2005 | .09 | 33.70 % |
| 2006 | .11 | 25.00 % |
| 2007 | .11 | 0.00 % |
| 2008 | .11 | -0.27 % |
| 2009 | .08 | -29.81 % |
| 2010 | .07 | -14.29 % |
|
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