|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .04 | NA |
| 1987 | .02 | -41.83 % |
| 1988 | .04 | 81.74 % |
| 1989 | .04 | -6.03 % |
| 1990 | .02 | -46.84 % |
| 1991 | .39 | 1,708.68 % |
| 1992 | .42 | 6.81 % |
| 1993 | .42 | 0.56 % |
| 1994 | .42 | 0.06 % |
| 1995 | .07 | -82.41 % |
| 1996 | .08 | 3.85 % |
| 1997 | .39 | 405.64 % |
| 1998 | .39 | -0.15 % |
| 1999 | .03 | -91.36 % |
| 2000 | .03 | -0.27 % |
| 2001 | .00 | -94.23 % |
| 2002 | | NA |
| 2003 | | NA |
| 2004 | | NA |
| 2005 | | NA |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
|
|
