|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | .03 | NA |
| 1988 | .03 | -0.28 % |
| 1989 | .03 | 0.28 % |
| 1990 | .06 | 100.00 % |
| 1991 | .06 | 0.00 % |
| 1992 | .06 | -0.28 % |
| 1993 | .06 | 0.28 % |
| 1994 | .10 | 50.00 % |
| 1995 | .08 | -13.79 % |
| 1996 | .14 | 70.34 % |
| 1997 | .16 | 17.14 % |
| 1998 | .13 | -22.49 % |
| 1999 | .13 | 0.00 % |
| 2000 | .19 | 46.15 % |
| 2001 | .19 | 0.72 % |
| 2002 | .22 | 18.89 % |
| 2003 | .19 | -14.29 % |
| 2004 | .19 | -0.27 % |
| 2005 | .19 | 0.27 % |
| 2006 | .21 | 9.24 % |
| 2007 | .19 | -8.45 % |
| 2008 | .21 | 9.67 % |
| 2009 | .24 | 15.04 % |
| 2010 | .24 | 0.00 % |
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