|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 1.14 | NA |
| 1993 | .21 | -81.42 % |
| 1994 | .40 | 88.88 % |
| 1995 | .30 | -24.16 % |
| 1996 | .27 | -9.49 % |
| 1997 | .63 | 129.86 % |
| 1998 | .04 | -93.29 % |
| 1999 | .02 | -49.99 % |
| 2000 | .04 | 99.43 % |
| 2001 | .02 | -49.86 % |
| 2002 | .02 | 0.00 % |
| 2003 | .02 | 0.00 % |
| 2004 | .02 | -0.28 % |
| 2005 | .02 | 0.28 % |
| 2006 | .02 | 0.00 % |
| 2007 | .02 | 0.00 % |
| 2008 | .02 | 0.00 % |
| 2009 | .02 | 0.00 % |
| 2010 | .02 | 0.00 % |
|
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