|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .22 | NA |
| 1987 | .23 | 3.32 % |
| 1988 | .21 | -8.24 % |
| 1989 | .26 | 24.29 % |
| 1990 | .21 | -18.72 % |
| 1991 | .19 | -10.09 % |
| 1992 | .24 | 26.97 % |
| 1993 | .24 | 1.01 % |
| 1994 | .22 | -8.71 % |
| 1995 | .32 | 42.47 % |
| 1996 | | NA |
| 1997 | | NA |
| 1998 | .10 | NA |
| 1999 | .03 | -66.67 % |
| 2000 | .03 | -0.28 % |
| 2001 | .03 | 0.28 % |
| 2002 | .03 | 0.00 % |
| 2003 | .03 | 0.00 % |
| 2004 | .13 | 299.50 % |
| 2005 | | NA |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
|
|
