|
| year | consumption | change |
| 1980 | 180.00 | NA |
| 1981 | 110.00 | -38.89 % |
| 1982 | 88.00 | -20.00 % |
| 1983 | 112.00 | 27.27 % |
| 1984 | 122.00 | 8.93 % |
| 1985 | 143.00 | 17.21 % |
| 1986 | 168.00 | 17.48 % |
| 1987 | 160.75 | -4.32 % |
| 1988 | 156.80 | -2.46 % |
| 1989 | 164.76 | 5.08 % |
| 1990 | 175.00 | 6.22 % |
| 1991 | 175.15 | 0.09 % |
| 1992 | 174.00 | -0.66 % |
| 1993 | 168.10 | -3.39 % |
| 1994 | 173.39 | 3.15 % |
| 1995 | 171.28 | -1.22 % |
| 1996 | 184.34 | 7.63 % |
| 1997 | 192.47 | 4.41 % |
| 1998 | 192.47 | 0.00 % |
| 1999 | 149.74 | -22.20 % |
| 2000 | 183.64 | 22.64 % |
| 2001 | 190.35 | 3.65 % |
| 2002 | 197.06 | 3.53 % |
| 2003 | 167.75 | -14.87 % |
| 2004 | 209.42 | 24.84 % |
| 2005 | 205.89 | -1.69 % |
| 2006 | 165.80 | -19.47 % |
| 2007 | 187.88 | 13.31 % |
| 2008 | 194.23 | 3.38 % |
| 2009 | 212.24 | 9.27 % |
| 2010 | 241.70 | 13.88 % |
| 2011 | 147.93 | -38.79 % |
|
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