|
| year | consumption | change |
| 1980 | 225.00 | NA |
| 1981 | 212.00 | -5.78 % |
| 1982 | 209.00 | -1.42 % |
| 1983 | 195.00 | -6.70 % |
| 1984 | 167.00 | -14.36 % |
| 1985 | 152.00 | -8.98 % |
| 1986 | 158.75 | 4.44 % |
| 1987 | 188.45 | 18.71 % |
| 1988 | 195.60 | 3.79 % |
| 1989 | 229.40 | 17.28 % |
| 1990 | 235.79 | 2.79 % |
| 1991 | 235.34 | -0.19 % |
| 1992 | 259.63 | 10.32 % |
| 1993 | 284.54 | 9.60 % |
| 1994 | 302.58 | 6.34 % |
| 1995 | 328.42 | 8.54 % |
| 1996 | 346.14 | 5.39 % |
| 1997 | 364.85 | 5.40 % |
| 1998 | 381.36 | 4.53 % |
| 1999 | 369.67 | -3.07 % |
| 2000 | 352.77 | -4.57 % |
| 2001 | 346.85 | -1.68 % |
| 2002 | 337.75 | -2.62 % |
| 2003 | 332.61 | -1.52 % |
| 2004 | 337.22 | 1.39 % |
| 2005 | 340.79 | 1.06 % |
| 2006 | 332.47 | -2.44 % |
| 2007 | 314.28 | -5.47 % |
| 2008 | 300.23 | -4.47 % |
| 2009 | 295.11 | -1.71 % |
| 2010 | 309.25 | 4.79 % |
| 2011 | 316.00 | 2.18 % |
|
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