|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | .05 | NA |
| 1988 | .05 | -0.26 % |
| 1989 | .05 | 0.26 % |
| 1990 | .07 | 33.35 % |
| 1991 | .07 | 0.00 % |
| 1992 | .07 | -0.27 % |
| 1993 | .07 | 0.27 % |
| 1994 | .07 | 0.00 % |
| 1995 | .07 | -0.27 % |
| 1996 | .07 | 0.00 % |
| 1997 | .07 | 0.27 % |
| 1998 | .07 | 0.00 % |
| 1999 | .07 | 0.01 % |
| 2000 | .07 | -0.27 % |
| 2001 | .09 | 25.33 % |
| 2002 | .09 | 0.00 % |
| 2003 | .09 | 0.00 % |
| 2004 | .07 | -20.21 % |
| 2005 | .07 | 0.27 % |
| 2006 | .09 | 24.99 % |
| 2007 | .09 | 0.00 % |
| 2008 | .09 | 0.00 % |
| 2009 | .09 | 0.00 % |
| 2010 | .09 | 0.00 % |
|
|