|
| year | consumption | change |
| 1980 | 1,251.00 | NA |
| 1981 | 1,267.00 | 1.28 % |
| 1982 | 1,411.00 | 11.37 % |
| 1983 | 1,446.00 | 2.48 % |
| 1984 | 1,395.00 | -3.53 % |
| 1985 | 1,336.00 | -4.23 % |
| 1986 | 1,410.00 | 5.54 % |
| 1987 | 1,405.29 | -0.33 % |
| 1988 | 1,305.60 | -7.09 % |
| 1989 | 1,384.35 | 6.03 % |
| 1990 | 1,261.00 | -8.91 % |
| 1991 | 1,040.00 | -17.53 % |
| 1992 | 935.85 | -10.01 % |
| 1993 | 908.30 | -2.94 % |
| 1994 | 850.74 | -6.34 % |
| 1995 | 900.53 | 5.85 % |
| 1996 | 893.82 | -0.75 % |
| 1997 | 829.90 | -7.15 % |
| 1998 | 649.80 | -21.70 % |
| 1999 | 621.54 | -4.35 % |
| 2000 | 600.36 | -3.41 % |
| 2001 | 695.71 | 15.88 % |
| 2002 | 646.26 | -7.11 % |
| 2003 | 635.67 | -1.64 % |
| 2004 | 635.67 | 0.00 % |
| 2005 | 642.73 | 1.11 % |
| 2006 | 657.57 | 2.31 % |
| 2007 | 605.30 | -7.95 % |
| 2008 | 560.80 | -7.35 % |
| 2009 | 454.50 | -18.95 % |
| 2010 | 454.50 | 0.00 % |
| 2011 | 486.29 | 6.99 % |
|
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