|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 148.21 | NA |
| 1987 | 154.07 | 3.96 % |
| 1988 | 147.68 | -4.15 % |
| 1989 | 138.97 | -5.90 % |
| 1990 | 127.46 | -8.28 % |
| 1991 | 140.73 | 10.41 % |
| 1992 | 149.05 | 5.91 % |
| 1993 | 152.77 | 2.50 % |
| 1994 | 164.30 | 7.54 % |
| 1995 | 166.83 | 1.54 % |
| 1996 | 187.31 | 12.27 % |
| 1997 | 200.64 | 7.12 % |
| 1998 | 212.57 | 5.95 % |
| 1999 | 216.86 | 2.02 % |
| 2000 | 211.44 | -2.50 % |
| 2001 | 177.86 | -15.88 % |
| 2002 | 176.35 | -0.85 % |
| 2003 | 184.43 | 4.58 % |
| 2004 | 201.30 | 9.14 % |
| 2005 | 207.43 | 3.05 % |
| 2006 | 208.74 | 0.63 % |
| 2007 | 230.46 | 10.41 % |
| 2008 | 230.61 | 0.06 % |
| 2009 | 218.38 | -5.30 % |
| 2010 | 233.10 | 6.74 % |
|
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