|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.62 | NA |
| 1987 | .60 | -62.96 % |
| 1988 | | NA |
| 1989 | 2.12 | NA |
| 1990 | 2.50 | 17.76 % |
| 1991 | 3.60 | 44.00 % |
| 1992 | 4.01 | 11.47 % |
| 1993 | .23 | -94.19 % |
| 1994 | 2.81 | 1,107.15 % |
| 1995 | 4.87 | 73.22 % |
| 1996 | 6.80 | 39.60 % |
| 1997 | .20 | -97.06 % |
| 1998 | 6.18 | 2,992.00 % |
| 1999 | .17 | -97.26 % |
| 2000 | .19 | 12.19 % |
| 2001 | .19 | 0.27 % |
| 2002 | .19 | 0.00 % |
| 2003 | .25 | 33.34 % |
| 2004 | .40 | 57.90 % |
| 2005 | .23 | -41.95 % |
| 2006 | .21 | -9.09 % |
| 2007 | .13 | -40.00 % |
| 2008 | .04 | -66.66 % |
| 2009 | .02 | -50.00 % |
| 2010 | | NA |
|
|