|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | .02 | NA |
| 1990 | .03 | 77.94 % |
| 1991 | .03 | 0.00 % |
| 1992 | .03 | -0.28 % |
| 1993 | .03 | 0.28 % |
| 1994 | .03 | 0.00 % |
| 1995 | .03 | 0.00 % |
| 1996 | .03 | -0.28 % |
| 1997 | .03 | 0.28 % |
| 1998 | | NA |
| 1999 | | NA |
| 2000 | | NA |
| 2001 | | NA |
| 2002 | .03 | NA |
| 2003 | .06 | 87.63 % |
| 2004 | .03 | -46.86 % |
| 2005 | | NA |
| 2006 | .01 | NA |
| 2007 | .13 | 1,233.89 % |
| 2008 | .11 | -10.00 % |
| 2009 | .15 | 28.89 % |
| 2010 | .16 | 7.76 % |
|
|
