|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 5.64 | NA |
| 1993 | 1.46 | -74.12 % |
| 1994 | 1.59 | 8.70 % |
| 1995 | 2.65 | 66.97 % |
| 1996 | 2.90 | 9.48 % |
| 1997 | 2.91 | 0.32 % |
| 1998 | 3.61 | 23.91 % |
| 1999 | .61 | -83.20 % |
| 2000 | .40 | -33.32 % |
| 2001 | 4.02 | 894.78 % |
| 2002 | .53 | -86.75 % |
| 2003 | .51 | -3.43 % |
| 2004 | .51 | -0.27 % |
| 2005 | .50 | -3.28 % |
| 2006 | .51 | 3.74 % |
| 2007 | .53 | 2.85 % |
| 2008 | 2.39 | 351.72 % |
| 2009 | 2.09 | -12.74 % |
| 2010 | 2.05 | -1.75 % |
|
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