|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 10.99 | NA |
| 1993 | 5.77 | -47.43 % |
| 1994 | 1.92 | -66.75 % |
| 1995 | 1.84 | -4.17 % |
| 1996 | 1.97 | 7.07 % |
| 1997 | 1.52 | -22.98 % |
| 1998 | 2.08 | 36.79 % |
| 1999 | 2.84 | 36.96 % |
| 2000 | 4.50 | 58.13 % |
| 2001 | 10.47 | 132.99 % |
| 2002 | .19 | -98.21 % |
| 2003 | .19 | 0.05 % |
| 2004 | .30 | 57.96 % |
| 2005 | .30 | 0.35 % |
| 2006 | .29 | -1.07 % |
| 2007 | .51 | 73.39 % |
| 2008 | .55 | 7.14 % |
| 2009 | .64 | 17.21 % |
| 2010 | .55 | -14.68 % |
|
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