|
| year | consumption | change |
| 1980 | 460.00 | NA |
| 1981 | 346.00 | -24.78 % |
| 1982 | 553.00 | 59.83 % |
| 1983 | 656.00 | 18.63 % |
| 1984 | 680.00 | 3.66 % |
| 1985 | 584.00 | -14.12 % |
| 1986 | 602.00 | 3.08 % |
| 1987 | 655.74 | 8.93 % |
| 1988 | 712.30 | 8.63 % |
| 1989 | 660.36 | -7.29 % |
| 1990 | 681.00 | 3.13 % |
| 1991 | 775.00 | 13.80 % |
| 1992 | 730.00 | -5.81 % |
| 1993 | 655.09 | -10.26 % |
| 1994 | 690.41 | 5.39 % |
| 1995 | 741.97 | 7.47 % |
| 1996 | 762.10 | 2.71 % |
| 1997 | 711.95 | -6.58 % |
| 1998 | 736.32 | 3.42 % |
| 1999 | 752.56 | 2.21 % |
| 2000 | 726.08 | -3.52 % |
| 2001 | 721.84 | -0.58 % |
| 2002 | 720.78 | -0.15 % |
| 2003 | 724.66 | 0.54 % |
| 2004 | 680.87 | -6.04 % |
| 2005 | 846.32 | 24.30 % |
| 2006 | 904.06 | 6.82 % |
| 2007 | 934.33 | 3.35 % |
| 2008 | 977.34 | 4.60 % |
| 2009 | 1,015.52 | 3.91 % |
| 2010 | 1,017.78 | 0.22 % |
| 2011 | 1,085.94 | 6.70 % |
|
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