|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 22.38 | NA |
| 1993 | 22.72 | 1.50 % |
| 1994 | 8.87 | -60.96 % |
| 1995 | 7.13 | -19.55 % |
| 1996 | 6.26 | -12.28 % |
| 1997 | 4.42 | -29.45 % |
| 1998 | 3.56 | -19.42 % |
| 1999 | 1.30 | -63.59 % |
| 2000 | 5.64 | 335.43 % |
| 2001 | 9.98 | 76.94 % |
| 2002 | 9.49 | -4.94 % |
| 2003 | .49 | -94.81 % |
| 2004 | .38 | -22.44 % |
| 2005 | .33 | -14.05 % |
| 2006 | .60 | 83.33 % |
| 2007 | .13 | -78.79 % |
| 2008 | .31 | 142.85 % |
| 2009 | .39 | 25.21 % |
| 2010 | .50 | 28.20 % |
|
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