|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | 21.54 | NA |
| 1988 | 69.92 | 224.65 % |
| 1989 | 68.28 | -2.35 % |
| 1990 | 67.00 | -1.87 % |
| 1991 | 11.00 | -83.58 % |
| 1992 | 10.59 | -3.69 % |
| 1993 | 10.59 | 0.00 % |
| 1994 | 10.59 | -0.04 % |
| 1995 | 7.06 | -33.33 % |
| 1996 | 8.12 | 15.05 % |
| 1997 | 8.12 | 0.00 % |
| 1998 | 8.12 | 0.00 % |
| 1999 | 8.12 | 0.00 % |
| 2000 | 8.12 | 0.00 % |
| 2001 | 1.77 | -78.26 % |
| 2002 | 1.77 | 0.00 % |
| 2003 | .71 | -60.00 % |
| 2004 | .71 | 0.00 % |
| 2005 | .71 | 0.00 % |
| 2006 | .71 | 0.00 % |
| 2007 | 1.41 | 100.00 % |
| 2008 | 1.77 | 25.00 % |
| 2009 | 1.06 | -40.00 % |
| 2010 | 4.94 | 366.67 % |
| 2011 | 4.94 | 0.00 % |
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