|
| year | consumption | change |
| 1984 | 108.37 | NA |
| 1985 | 114.17 | 5.35 % |
| 1986 | 127.25 | 11.46 % |
| 1987 | 145.15 | 14.06 % |
| 1988 | 143.85 | -0.90 % |
| 1989 | 144.42 | 0.40 % |
| 1990 | 153.68 | 6.41 % |
| 1991 | 145.68 | -5.20 % |
| 1992 | 142.37 | -2.27 % |
| 1993 | 171.70 | 20.60 % |
| 1994 | 162.14 | -5.57 % |
| 1995 | 179.98 | 11.00 % |
| 1996 | 185.85 | 3.26 % |
| 1997 | 161.50 | -13.10 % |
| 1998 | 138.14 | -14.46 % |
| 1999 | 168.74 | 22.15 % |
| 2000 | 184.77 | 9.50 % |
| 2001 | 178.75 | -3.26 % |
| 2002 | 196.17 | 9.74 % |
| 2003 | 200.73 | 2.32 % |
| 2004 | 217.85 | 8.53 % |
| 2005 | 216.78 | -0.49 % |
| 2006 | 246.20 | 13.57 % |
| 2007 | 280.58 | 13.96 % |
| 2008 | 300.18 | 6.99 % |
| 2009 | 280.92 | -6.42 % |
| 2010 | 297.42 | 5.87 % |
|
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