|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .22 | NA |
| 1987 | .25 | 10.93 % |
| 1988 | .22 | -9.05 % |
| 1989 | .20 | -10.04 % |
| 1990 | .20 | 0.17 % |
| 1991 | .21 | 3.77 % |
| 1992 | .22 | 3.51 % |
| 1993 | .25 | 17.28 % |
| 1994 | .30 | 18.05 % |
| 1995 | .32 | 5.89 % |
| 1996 | .32 | -0.27 % |
| 1997 | .19 | -39.84 % |
| 1998 | .30 | 55.56 % |
| 1999 | .42 | 42.86 % |
| 2000 | .38 | -10.25 % |
| 2001 | .40 | 5.84 % |
| 2002 | .42 | 5.26 % |
| 2003 | .47 | 10.00 % |
| 2004 | .34 | -27.47 % |
| 2005 | .28 | -18.53 % |
| 2006 | .28 | 0.00 % |
| 2007 | 2.09 | 657.30 % |
| 2008 | .08 | -95.94 % |
| 2009 | .06 | -25.00 % |
| 2010 | .13 | 100.02 % |
|
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