|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .00 | NA |
| 1987 | .04 | 1,177.19 % |
| 1988 | .00 | -93.59 % |
| 1989 | .04 | 1,460.00 % |
| 1990 | .02 | -48.08 % |
| 1991 | .02 | 4.54 % |
| 1992 | 1.63 | 6,785.45 % |
| 1993 | 1.31 | -19.74 % |
| 1994 | 1.20 | -8.51 % |
| 1995 | 1.13 | -5.49 % |
| 1996 | 1.17 | 3.59 % |
| 1997 | 1.28 | 8.92 % |
| 1998 | 1.25 | -2.47 % |
| 1999 | 1.06 | -14.75 % |
| 2000 | 1.27 | 19.05 % |
| 2001 | 1.90 | 50.38 % |
| 2002 | 1.53 | -19.35 % |
| 2003 | 2.43 | 58.63 % |
| 2004 | 2.94 | 20.66 % |
| 2005 | 3.03 | 3.06 % |
| 2006 | 3.50 | 15.54 % |
| 2007 | 4.27 | 22.14 % |
| 2008 | 4.99 | 16.75 % |
| 2009 | 5.85 | 17.26 % |
| 2010 | 6.58 | 12.58 % |
|
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