|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.29 | NA |
| 1987 | 1.33 | 3.17 % |
| 1988 | 1.37 | 2.79 % |
| 1989 | 1.35 | -1.22 % |
| 1990 | 1.37 | 1.51 % |
| 1991 | 1.43 | 4.48 % |
| 1992 | 1.43 | -0.27 % |
| 1993 | 1.43 | 0.27 % |
| 1994 | 1.43 | 0.00 % |
| 1995 | 1.47 | 2.86 % |
| 1996 | 1.47 | -0.27 % |
| 1997 | 1.47 | 0.27 % |
| 1998 | 1.47 | 0.00 % |
| 1999 | 1.47 | 0.00 % |
| 2000 | 1.47 | -0.27 % |
| 2001 | 1.49 | 1.67 % |
| 2002 | 1.49 | 0.00 % |
| 2003 | 1.53 | 2.74 % |
| 2004 | 1.53 | -0.27 % |
| 2005 | 1.64 | 6.96 % |
| 2006 | 1.64 | 0.00 % |
| 2007 | 1.57 | -3.75 % |
| 2008 | 1.27 | -19.11 % |
| 2009 | 1.57 | 23.63 % |
| 2010 | .03 | -98.31 % |
|
|
