|
| year | consumption | change |
| 1984 | 78.54 | NA |
| 1985 | 81.27 | 3.47 % |
| 1986 | 81.98 | 0.88 % |
| 1987 | 92.28 | 12.56 % |
| 1988 | 97.28 | 5.43 % |
| 1989 | 103.55 | 6.44 % |
| 1990 | 106.97 | 3.30 % |
| 1991 | 111.43 | 4.17 % |
| 1992 | 111.39 | -0.04 % |
| 1993 | 112.45 | 0.96 % |
| 1994 | 114.95 | 2.22 % |
| 1995 | 122.84 | 6.87 % |
| 1996 | 132.73 | 8.05 % |
| 1997 | 135.08 | 1.77 % |
| 1998 | 142.72 | 5.65 % |
| 1999 | 140.50 | -1.56 % |
| 2000 | 144.34 | 2.74 % |
| 2001 | 148.75 | 3.05 % |
| 2002 | 153.84 | 3.42 % |
| 2003 | 169.59 | 10.24 % |
| 2004 | 154.10 | -9.13 % |
| 2005 | 160.61 | 4.22 % |
| 2006 | 163.73 | 1.95 % |
| 2007 | 156.17 | -4.62 % |
| 2008 | 148.65 | -4.81 % |
| 2009 | 144.36 | -2.89 % |
| 2010 | 128.56 | -10.95 % |
|
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