|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.05 | NA |
| 1987 | 1.57 | 50.13 % |
| 1988 | 1.28 | -18.18 % |
| 1989 | .52 | -59.36 % |
| 1990 | 1.13 | 116.72 % |
| 1991 | 1.17 | 3.23 % |
| 1992 | .78 | -33.32 % |
| 1993 | .16 | -78.91 % |
| 1994 | .15 | -11.11 % |
| 1995 | .32 | 121.47 % |
| 1996 | .44 | 36.10 % |
| 1997 | 1.83 | 316.82 % |
| 1998 | .84 | -54.23 % |
| 1999 | .62 | -26.09 % |
| 2000 | .31 | -50.14 % |
| 2001 | .31 | -0.90 % |
| 2002 | .31 | 1.19 % |
| 2003 | .44 | 41.18 % |
| 2004 | .20 | -54.29 % |
| 2005 | .22 | 9.39 % |
| 2006 | .22 | 0.00 % |
| 2007 | .47 | 116.67 % |
| 2008 | .47 | 0.00 % |
| 2009 | .20 | -57.69 % |
| 2010 | .11 | -45.45 % |
|
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