|
| year | consumption | change |
| 1980 | 1,715.20 | NA |
| 1981 | 1,912.51 | 11.50 % |
| 1982 | 2,094.39 | 9.51 % |
| 1983 | 2,267.46 | 8.26 % |
| 1984 | 2,474.69 | 9.14 % |
| 1985 | 2,710.58 | 9.53 % |
| 1986 | 2,685.23 | -0.94 % |
| 1987 | 2,678.62 | -0.25 % |
| 1988 | 2,792.16 | 4.24 % |
| 1989 | 2,462.56 | -11.80 % |
| 1990 | 2,344.62 | -4.79 % |
| 1991 | 1,308.44 | -44.19 % |
| 1992 | 371.48 | -71.61 % |
| 1993 | 244.71 | -34.12 % |
| 1994 | 187.56 | -23.36 % |
| 1995 | 88.18 | -52.98 % |
| 1996 | 124.56 | 41.25 % |
| 1997 | 42.99 | -65.49 % |
| 1998 | 54.01 | 25.64 % |
| 1999 | 131.18 | 142.86 % |
| 2000 | 80.47 | -38.66 % |
| 2001 | 93.70 | 16.44 % |
| 2002 | 99.21 | 5.88 % |
| 2003 | 99.21 | 0.00 % |
| 2004 | 99.21 | 0.00 % |
| 2005 | 84.88 | -14.44 % |
| 2006 | 84.88 | 0.00 % |
| 2007 | 84.88 | 0.00 % |
| 2008 | 108.03 | 27.27 % |
| 2009 | 238.10 | 120.41 % |
| 2010 | 263.45 | 10.65 % |
| 2011 | 48.50 | -81.59 % |
|
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