|
| year | consumption | change |
| 1980 | .00 | NA |
| 1981 | .00 | NA |
| 1982 | .00 | NA |
| 1983 | .00 | NA |
| 1984 | .00 | NA |
| 1985 | .00 | NA |
| 1986 | .00 | NA |
| 1987 | .00 | 50.00 % |
| 1988 | .01 | 233.33 % |
| 1989 | .01 | 0.00 % |
| 1990 | .03 | 200.00 % |
| 1991 | .04 | 33.33 % |
| 1992 | .08 | 100.00 % |
| 1993 | .09 | 12.50 % |
| 1994 | .18 | 100.00 % |
| 1995 | .47 | 161.11 % |
| 1996 | .84 | 78.72 % |
| 1997 | .95 | 13.10 % |
| 1998 | 1.03 | 8.42 % |
| 1999 | 2.30 | 123.30 % |
| 2000 | 2.89 | 25.65 % |
| 2001 | 3.87 | 33.91 % |
| 2002 | 4.31 | 11.37 % |
| 2003 | 5.20 | 20.65 % |
| 2004 | 6.08 | 16.92 % |
| 2005 | 8.15 | 34.05 % |
| 2006 | 9.45 | 15.95 % |
|
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