|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.51 | NA |
| 1987 | 74.76 | 2,881.68 % |
| 1988 | 96.59 | 29.19 % |
| 1989 | 93.48 | -3.22 % |
| 1990 | 107.00 | 14.46 % |
| 1991 | 124.00 | 15.89 % |
| 1992 | 162.55 | 31.09 % |
| 1993 | 203.06 | 24.92 % |
| 1994 | 270.30 | 33.11 % |
| 1995 | 326.84 | 20.92 % |
| 1996 | 431.80 | 32.11 % |
| 1997 | 524.75 | 21.53 % |
| 1998 | 490.88 | -6.45 % |
| 1999 | 597.74 | 21.77 % |
| 2000 | 668.58 | 11.85 % |
| 2001 | 718.80 | 7.51 % |
| 2002 | 823.65 | 14.59 % |
| 2003 | 858.23 | 4.20 % |
| 2004 | 1,011.78 | 17.89 % |
| 2005 | 1,076.30 | 6.38 % |
| 2006 | 1,137.28 | 5.67 % |
| 2007 | 1,230.80 | 8.22 % |
| 2008 | 1,265.37 | 2.81 % |
| 2009 | 1,215.30 | -3.96 % |
| 2010 | 1,525.64 | 25.54 % |
| 2011 | 1,614.25 | 5.81 % |
|
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