|
| year | consumption | change |
| 1980 | 170.00 | NA |
| 1981 | 200.00 | 17.65 % |
| 1982 | 215.00 | 7.50 % |
| 1983 | 202.00 | -6.05 % |
| 1984 | 210.00 | 3.96 % |
| 1985 | 222.00 | 5.71 % |
| 1986 | 208.30 | -6.17 % |
| 1987 | 218.00 | 4.66 % |
| 1988 | 234.10 | 7.39 % |
| 1989 | 243.99 | 4.22 % |
| 1990 | 251.00 | 2.87 % |
| 1991 | 258.66 | 3.05 % |
| 1992 | 264.72 | 2.34 % |
| 1993 | 270.80 | 2.30 % |
| 1994 | 251.97 | -6.95 % |
| 1995 | 284.04 | 12.73 % |
| 1996 | 286.05 | 0.71 % |
| 1997 | 277.25 | -3.08 % |
| 1998 | 260.10 | -6.19 % |
| 1999 | 251.97 | -3.13 % |
| 2000 | 245.57 | -2.54 % |
| 2001 | 305.69 | 24.48 % |
| 2002 | 303.95 | -0.57 % |
| 2003 | 288.47 | -5.09 % |
| 2004 | 277.07 | -3.95 % |
| 2005 | 311.63 | 12.47 % |
| 2006 | 284.47 | -8.72 % |
| 2007 | 268.94 | -5.46 % |
| 2008 | 269.13 | 0.07 % |
| 2009 | 242.50 | -9.89 % |
| 2010 | 242.20 | -0.12 % |
| 2011 | 286.00 | 18.08 % |
|
|