|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .02 | NA |
| 1987 | .02 | -0.80 % |
| 1988 | .04 | 101.14 % |
| 1989 | .04 | 0.26 % |
| 1990 | .04 | 0.00 % |
| 1991 | .04 | 0.00 % |
| 1992 | .04 | -0.26 % |
| 1993 | .04 | 0.26 % |
| 1994 | .04 | 0.00 % |
| 1995 | .04 | 0.00 % |
| 1996 | .04 | -0.26 % |
| 1997 | .04 | 0.26 % |
| 1998 | .04 | 0.00 % |
| 1999 | .04 | 0.02 % |
| 2000 | .04 | -0.28 % |
| 2001 | .04 | 0.28 % |
| 2002 | .04 | 0.00 % |
| 2003 | .04 | 0.00 % |
| 2004 | .04 | -0.28 % |
| 2005 | .04 | 0.28 % |
| 2006 | .04 | 0.00 % |
| 2007 | .06 | 49.98 % |
| 2008 | .05 | -16.65 % |
| 2009 | .04 | -20.00 % |
| 2010 | .06 | 29.98 % |
|
|