|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | 7.72 | NA |
| 1984 | 14.33 | 85.71 % |
| 1985 | 246.92 | 1,623.08 % |
| 1986 | 30.86 | -87.50 % |
| 1987 | 255.74 | 728.57 % |
| 1988 | 106.92 | -58.19 % |
| 1989 | 11.02 | -89.69 % |
| 1990 | 18.83 | 70.81 % |
| 1991 | 214.07 | 1,036.94 % |
| 1992 | 203.27 | -5.05 % |
| 1993 | 237.44 | 16.81 % |
| 1994 | 67.57 | -71.54 % |
| 1995 | 87.96 | 30.18 % |
| 1996 | 114.75 | 30.45 % |
| 1997 | 116.51 | 1.54 % |
| 1998 | 164.93 | 41.55 % |
| 1999 | 257.50 | 56.13 % |
| 2000 | 102.12 | -60.34 % |
| 2001 | 223.32 | 118.69 % |
| 2002 | 257.30 | 15.22 % |
| 2003 | 1,165.36 | 352.92 % |
| 2004 | 856.63 | -26.49 % |
| 2005 | 524.19 | -38.81 % |
| 2006 | 892.80 | 70.32 % |
| 2007 | 919.32 | 2.97 % |
| 2008 | 957.51 | 4.15 % |
| 2009 | 940.01 | -1.83 % |
| 2010 | 897.95 | -4.47 % |
| 2011 | 1,089.05 | 21.28 % |
|
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