|
| year | consumption | change |
| 1980 | 81.00 | NA |
| 1981 | 81.00 | 0.00 % |
| 1982 | 102.00 | 25.93 % |
| 1983 | 127.00 | 24.51 % |
| 1984 | 192.00 | 51.18 % |
| 1985 | 216.00 | 12.50 % |
| 1986 | 152.00 | -29.63 % |
| 1987 | 143.31 | -5.72 % |
| 1988 | 153.97 | 7.44 % |
| 1989 | 162.45 | 5.51 % |
| 1990 | 177.00 | 8.96 % |
| 1991 | 201.00 | 13.56 % |
| 1992 | 194.23 | -3.37 % |
| 1993 | 218.00 | 12.24 % |
| 1994 | 249.68 | 14.53 % |
| 1995 | 268.04 | 7.35 % |
| 1996 | 302.65 | 12.91 % |
| 1997 | 328.43 | 8.52 % |
| 1998 | 328.43 | 0.00 % |
| 1999 | 336.91 | 2.58 % |
| 2000 | 354.21 | 5.14 % |
| 2001 | 396.94 | 12.06 % |
| 2002 | 423.07 | 6.58 % |
| 2003 | 453.09 | 7.10 % |
| 2004 | 499.71 | 10.29 % |
| 2005 | 574.58 | 14.98 % |
| 2006 | 713.01 | 24.09 % |
| 2007 | 715.13 | 0.30 % |
| 2008 | 774.81 | 8.35 % |
| 2009 | 740.20 | -4.47 % |
| 2010 | 823.55 | 11.26 % |
| 2011 | 810.83 | -1.54 % |
|
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