|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .04 | NA |
| 1987 | .74 | 1,592.56 % |
| 1988 | .78 | 5.69 % |
| 1989 | .78 | 0.01 % |
| 1990 | .96 | 22.34 % |
| 1991 | 1.01 | 5.21 % |
| 1992 | .57 | -43.56 % |
| 1993 | .50 | -11.74 % |
| 1994 | .67 | 32.42 % |
| 1995 | .70 | 4.93 % |
| 1996 | .53 | -24.23 % |
| 1997 | .76 | 44.53 % |
| 1998 | .76 | 0.03 % |
| 1999 | .58 | -24.66 % |
| 2000 | 1.03 | 78.15 % |
| 2001 | .93 | -9.04 % |
| 2002 | 1.15 | 22.81 % |
| 2003 | 1.31 | 14.45 % |
| 2004 | 1.32 | 0.59 % |
| 2005 | 1.17 | -11.59 % |
| 2006 | 1.42 | 21.93 % |
| 2007 | 1.53 | 7.21 % |
| 2008 | 1.65 | 8.33 % |
| 2009 | 1.67 | 1.17 % |
| 2010 | 1.84 | 9.95 % |
|
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