|
| year | consumption | change |
| 1984 | 68.33 | NA |
| 1985 | 57.50 | -15.85 % |
| 1986 | 77.89 | 35.47 % |
| 1987 | 92.19 | 18.36 % |
| 1988 | 89.53 | -2.89 % |
| 1989 | 83.90 | -6.29 % |
| 1990 | 103.94 | 23.88 % |
| 1991 | 125.87 | 21.11 % |
| 1992 | 120.15 | -4.54 % |
| 1993 | 125.52 | 4.46 % |
| 1994 | 154.42 | 23.03 % |
| 1995 | 158.62 | 2.72 % |
| 1996 | 151.43 | -4.53 % |
| 1997 | 144.08 | -4.86 % |
| 1998 | 140.97 | -2.16 % |
| 1999 | 148.02 | 5.00 % |
| 2000 | 138.93 | -6.14 % |
| 2001 | 148.04 | 6.55 % |
| 2002 | 160.82 | 8.64 % |
| 2003 | 168.98 | 5.08 % |
| 2004 | 165.59 | -2.01 % |
| 2005 | 173.67 | 4.88 % |
| 2006 | 158.45 | -8.76 % |
| 2007 | 148.25 | -6.44 % |
| 2008 | 161.57 | 8.99 % |
| 2009 | 146.25 | -9.48 % |
| 2010 | 136.45 | -6.70 % |
|
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