|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .54 | NA |
| 1987 | .45 | -17.74 % |
| 1988 | .25 | -43.12 % |
| 1989 | .28 | 8.63 % |
| 1990 | .28 | 0.00 % |
| 1991 | .78 | 181.61 % |
| 1992 | 1.03 | 32.52 % |
| 1993 | 1.02 | -0.61 % |
| 1994 | 1.05 | 3.23 % |
| 1995 | 1.25 | 18.97 % |
| 1996 | 1.43 | 13.82 % |
| 1997 | 1.88 | 31.37 % |
| 1998 | 2.02 | 7.47 % |
| 1999 | .28 | -86.34 % |
| 2000 | 2.13 | 674.79 % |
| 2001 | 2.14 | 0.27 % |
| 2002 | 2.73 | 27.72 % |
| 2003 | 4.49 | 64.34 % |
| 2004 | 5.28 | 17.60 % |
| 2005 | 5.23 | -0.93 % |
| 2006 | 5.85 | 11.74 % |
| 2007 | 6.50 | 11.23 % |
| 2008 | 6.86 | 5.54 % |
| 2009 | 7.33 | 6.79 % |
| 2010 | 7.41 | 1.16 % |
|
|
