|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | | NA |
| 1993 | 1.17 | NA |
| 1994 | 1.21 | 3.04 % |
| 1995 | 1.08 | -10.23 % |
| 1996 | 1.05 | -3.30 % |
| 1997 | 1.12 | 6.56 % |
| 1998 | 1.02 | -8.85 % |
| 1999 | 1.01 | -0.27 % |
| 2000 | .95 | -6.20 % |
| 2001 | 6.27 | 559.85 % |
| 2002 | 6.67 | 6.24 % |
| 2003 | 6.80 | 2.06 % |
| 2004 | 7.04 | 3.46 % |
| 2005 | 5.54 | -21.25 % |
| 2006 | 5.13 | -7.51 % |
| 2007 | 4.90 | -4.33 % |
| 2008 | 5.34 | 8.98 % |
| 2009 | 5.39 | 0.84 % |
| 2010 | 4.34 | -19.47 % |
|
|
