|
| year | consumption | change |
| 1980 | 24.25 | NA |
| 1981 | 23.15 | -4.55 % |
| 1982 | 4.41 | -80.95 % |
| 1983 | 3.31 | -25.00 % |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | | NA |
| 1993 | | NA |
| 1994 | | NA |
| 1995 | | NA |
| 1996 | | NA |
| 1997 | | NA |
| 1998 | | NA |
| 1999 | 16.53 | NA |
| 2000 | 237.33 | 1,335.33 % |
| 2001 | 220.46 | -7.11 % |
| 2002 | 429.74 | 94.93 % |
| 2003 | 403.82 | -6.03 % |
| 2004 | 469.15 | 16.18 % |
| 2005 | 451.13 | -3.84 % |
| 2006 | 472.30 | 4.69 % |
| 2007 | 493.17 | 4.42 % |
| 2008 | 497.67 | 0.91 % |
| 2009 | 324.28 | -34.84 % |
| 2010 | 541.66 | 67.04 % |
| 2011 | 517.02 | -4.55 % |
|
|
