|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.87 | NA |
| 1987 | .44 | -76.58 % |
| 1988 | 4.30 | 883.28 % |
| 1989 | 4.66 | 8.32 % |
| 1990 | 5.55 | 19.02 % |
| 1991 | 4.04 | -27.18 % |
| 1992 | 1.56 | -61.49 % |
| 1993 | 1.92 | 23.29 % |
| 1994 | 1.22 | -36.56 % |
| 1995 | .98 | -19.68 % |
| 1996 | 1.24 | 26.68 % |
| 1997 | .02 | -98.53 % |
| 1998 | .79 | 4,204.55 % |
| 1999 | .78 | -0.22 % |
| 2000 | .76 | -2.55 % |
| 2001 | .82 | 7.51 % |
| 2002 | 1.48 | 80.05 % |
| 2003 | 2.18 | 47.34 % |
| 2004 | 2.41 | 10.73 % |
| 2005 | 2.52 | 4.45 % |
| 2006 | 3.82 | 51.63 % |
| 2007 | .04 | -99.04 % |
| 2008 | | NA |
| 2009 | 1.81 | NA |
| 2010 | 3.65 | 101.46 % |
|
|
