|
| year | consumption | change |
| 1980 | 10.00 | NA |
| 1981 | 10.59 | 5.90 % |
| 1982 | 10.00 | -5.57 % |
| 1983 | 10.60 | 6.00 % |
| 1984 | 10.80 | 1.89 % |
| 1985 | 10.00 | -7.41 % |
| 1986 | 14.00 | 40.00 % |
| 1987 | 15.90 | 13.57 % |
| 1988 | 24.72 | 55.47 % |
| 1989 | 24.72 | 0.00 % |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 3.60 | NA |
| 1993 | 1.06 | -70.60 % |
| 1994 | 1.06 | 0.09 % |
| 1995 | 1.06 | 0.00 % |
| 1996 | 1.06 | -0.05 % |
| 1997 | .71 | -33.33 % |
| 1998 | 1.06 | 50.00 % |
| 1999 | .71 | -33.33 % |
| 2000 | 1.06 | 50.00 % |
| 2001 | 1.06 | 0.00 % |
| 2002 | 1.06 | 0.00 % |
| 2003 | 1.06 | 0.00 % |
| 2004 | 1.06 | 0.00 % |
| 2005 | 1.06 | 0.00 % |
| 2006 | 1.06 | 0.00 % |
| 2007 | .35 | -66.67 % |
| 2008 | 1.06 | 200.00 % |
| 2009 | 1.06 | 0.00 % |
| 2010 | .35 | -66.67 % |
| 2011 | .35 | 0.00 % |
|
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