|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .55 | NA |
| 1987 | .49 | -11.54 % |
| 1988 | .53 | 8.40 % |
| 1989 | .53 | 0.27 % |
| 1990 | .28 | -48.00 % |
| 1991 | .15 | -47.01 % |
| 1992 | .36 | 146.10 % |
| 1993 | .36 | 0.27 % |
| 1994 | .36 | 0.00 % |
| 1995 | .36 | 0.00 % |
| 1996 | .36 | 0.00 % |
| 1997 | .36 | 0.00 % |
| 1998 | .36 | 0.00 % |
| 1999 | .36 | 0.00 % |
| 2000 | .50 | 38.89 % |
| 2001 | .50 | 0.00 % |
| 2002 | .50 | 0.00 % |
| 2003 | .50 | 0.00 % |
| 2004 | .50 | 0.00 % |
| 2005 | .64 | 27.07 % |
| 2006 | .64 | 0.00 % |
| 2007 | .85 | 33.33 % |
| 2008 | .80 | -5.00 % |
| 2009 | .70 | -13.16 % |
| 2010 | .70 | 0.00 % |
|
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