|
| year | consumption | change |
| 1984 | 144.65 | NA |
| 1985 | 116.88 | -19.20 % |
| 1986 | 123.59 | 5.74 % |
| 1987 | 130.40 | 5.51 % |
| 1988 | 152.25 | 16.76 % |
| 1989 | 188.69 | 23.94 % |
| 1990 | 174.74 | -7.39 % |
| 1991 | 158.78 | -9.14 % |
| 1992 | 156.40 | -1.49 % |
| 1993 | 138.03 | -11.75 % |
| 1994 | 127.11 | -7.92 % |
| 1995 | 114.50 | -9.92 % |
| 1996 | 107.52 | -6.10 % |
| 1997 | 123.04 | 14.43 % |
| 1998 | 151.92 | 23.47 % |
| 1999 | 132.62 | -12.71 % |
| 2000 | 131.77 | -0.64 % |
| 2001 | 163.94 | 24.42 % |
| 2002 | 139.12 | -15.14 % |
| 2003 | 174.26 | 25.26 % |
| 2004 | 169.15 | -2.93 % |
| 2005 | 196.48 | 16.15 % |
| 2006 | 110.90 | -43.56 % |
| 2007 | 121.94 | 9.95 % |
| 2008 | 107.44 | -11.89 % |
| 2009 | 96.76 | -9.94 % |
| 2010 | 102.38 | 5.81 % |
|
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