|
| year | consumption | change |
| 1980 | 42.00 | NA |
| 1981 | 42.00 | 0.00 % |
| 1982 | 46.00 | 9.52 % |
| 1983 | 57.00 | 23.91 % |
| 1984 | 74.00 | 29.82 % |
| 1985 | 92.00 | 24.32 % |
| 1986 | 90.00 | -2.17 % |
| 1987 | 104.81 | 16.46 % |
| 1988 | 97.47 | -7.00 % |
| 1989 | 122.54 | 25.72 % |
| 1990 | 97.00 | -20.84 % |
| 1991 | 118.86 | 22.54 % |
| 1992 | 130.31 | 9.64 % |
| 1993 | 146.00 | 12.04 % |
| 1994 | 152.20 | 4.25 % |
| 1995 | 159.27 | 4.65 % |
| 1996 | 178.34 | 11.97 % |
| 1997 | 194.94 | 9.31 % |
| 1998 | 204.83 | 5.07 % |
| 1999 | 230.96 | 12.76 % |
| 2000 | 333.37 | 44.34 % |
| 2001 | 396.23 | 18.86 % |
| 2002 | 472.87 | 19.34 % |
| 2003 | 499.35 | 5.60 % |
| 2004 | 608.12 | 21.78 % |
| 2005 | 657.21 | 8.07 % |
| 2006 | 682.99 | 3.92 % |
| 2007 | 701.36 | 2.69 % |
| 2008 | 835.20 | 19.08 % |
| 2009 | 661.10 | -20.85 % |
| 2010 | 889.94 | 34.62 % |
| 2011 | 884.99 | -0.56 % |
|
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