|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .03 | NA |
| 1987 | .01 | -80.64 % |
| 1988 | .03 | 389.24 % |
| 1989 | .03 | 25.48 % |
| 1990 | .04 | 34.20 % |
| 1991 | .03 | -33.52 % |
| 1992 | .03 | 7.18 % |
| 1993 | .26 | 750.03 % |
| 1994 | .11 | -55.87 % |
| 1995 | .11 | 0.00 % |
| 1996 | .11 | -0.27 % |
| 1997 | .11 | 0.27 % |
| 1998 | .11 | 0.00 % |
| 1999 | .11 | 0.01 % |
| 2000 | .12 | 6.62 % |
| 2001 | .12 | 0.00 % |
| 2002 | .12 | 0.00 % |
| 2003 | .12 | 0.00 % |
| 2004 | .12 | 0.00 % |
| 2005 | .12 | 0.00 % |
| 2006 | .23 | 91.90 % |
| 2007 | .22 | -3.39 % |
| 2008 | .25 | 10.99 % |
| 2009 | .22 | -10.29 % |
| 2010 | .22 | 0.00 % |
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