|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.04 | NA |
| 1987 | 1.20 | 14.63 % |
| 1988 | 1.03 | -13.53 % |
| 1989 | .98 | -5.74 % |
| 1990 | .95 | -2.30 % |
| 1991 | .95 | 0.00 % |
| 1992 | .95 | -0.27 % |
| 1993 | 1.02 | 6.96 % |
| 1994 | .91 | -10.42 % |
| 1995 | 1.04 | 13.95 % |
| 1996 | .99 | -4.34 % |
| 1997 | 1.31 | 32.28 % |
| 1998 | 1.67 | 27.24 % |
| 1999 | 2.18 | 30.56 % |
| 2000 | 1.94 | -10.92 % |
| 2001 | 2.67 | 37.33 % |
| 2002 | 1.55 | -42.06 % |
| 2003 | 1.16 | -24.66 % |
| 2004 | .25 | -78.24 % |
| 2005 | .02 | -91.64 % |
| 2006 | .04 | 100.00 % |
| 2007 | .11 | 149.98 % |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
|
|
