|
| year | consumption | change |
| 1980 | 374.00 | NA |
| 1981 | 345.00 | -7.75 % |
| 1982 | 340.00 | -1.45 % |
| 1983 | 319.60 | -6.00 % |
| 1984 | 307.00 | -3.94 % |
| 1985 | 320.00 | 4.23 % |
| 1986 | 322.20 | 0.69 % |
| 1987 | 339.59 | 5.40 % |
| 1988 | 329.58 | -2.95 % |
| 1989 | 345.00 | 4.68 % |
| 1990 | 382.25 | 10.80 % |
| 1991 | 276.51 | -27.66 % |
| 1992 | 250.01 | -9.58 % |
| 1993 | 248.48 | -0.61 % |
| 1994 | 220.77 | -11.15 % |
| 1995 | 244.21 | 10.62 % |
| 1996 | 256.99 | 5.24 % |
| 1997 | 269.91 | 5.03 % |
| 1998 | 249.53 | -7.55 % |
| 1999 | 215.57 | -13.61 % |
| 2000 | 224.24 | 4.02 % |
| 2001 | 228.91 | 2.08 % |
| 2002 | 232.28 | 1.48 % |
| 2003 | 219.61 | -5.46 % |
| 2004 | 225.09 | 2.50 % |
| 2005 | 221.88 | -1.42 % |
| 2006 | 217.63 | -1.92 % |
| 2007 | 224.05 | 2.95 % |
| 2008 | 230.95 | 3.08 % |
| 2009 | 201.35 | -12.82 % |
| 2010 | 193.46 | -3.92 % |
| 2011 | 217.00 | 12.17 % |
|
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