|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | .16 | NA |
| 1988 | .18 | 10.81 % |
| 1989 | .18 | 0.27 % |
| 1990 | .40 | 120.00 % |
| 1991 | .44 | 9.09 % |
| 1992 | .45 | 3.88 % |
| 1993 | .46 | 0.27 % |
| 1994 | .47 | 4.00 % |
| 1995 | .46 | -3.85 % |
| 1996 | .45 | -0.27 % |
| 1997 | .46 | 0.27 % |
| 1998 | .46 | 0.00 % |
| 1999 | .46 | 0.00 % |
| 2000 | .47 | 3.72 % |
| 2001 | .47 | 0.27 % |
| 2002 | .49 | 3.85 % |
| 2003 | .49 | 0.00 % |
| 2004 | .49 | -0.27 % |
| 2005 | .47 | -3.44 % |
| 2006 | .49 | 3.85 % |
| 2007 | .51 | 3.70 % |
| 2008 | .51 | -0.89 % |
| 2009 | .51 | 0.76 % |
| 2010 | .51 | 0.00 % |
|
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