|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.48 | NA |
| 1987 | .40 | -72.98 % |
| 1988 | 1.34 | 235.75 % |
| 1989 | 1.22 | -9.16 % |
| 1990 | 1.44 | 18.03 % |
| 1991 | 1.70 | 18.06 % |
| 1992 | 1.75 | 3.12 % |
| 1993 | 1.38 | -21.07 % |
| 1994 | 1.86 | 34.70 % |
| 1995 | 1.93 | 3.41 % |
| 1996 | 2.03 | 5.21 % |
| 1997 | 1.84 | -9.13 % |
| 1998 | 1.27 | -31.03 % |
| 1999 | 1.06 | -16.67 % |
| 2000 | .49 | -54.13 % |
| 2001 | .64 | 30.79 % |
| 2002 | .57 | -10.00 % |
| 2003 | .53 | -7.41 % |
| 2004 | .49 | -8.25 % |
| 2005 | .61 | 26.43 % |
| 2006 | .38 | -37.93 % |
| 2007 | .51 | 33.33 % |
| 2008 | .64 | 25.00 % |
| 2009 | .40 | -36.67 % |
| 2010 | .70 | 73.69 % |
|
|