|
| year | consumption | change |
| 1984 | 102.97 | NA |
| 1985 | 124.15 | 20.56 % |
| 1986 | 118.32 | -4.69 % |
| 1987 | 155.77 | 31.65 % |
| 1988 | 179.93 | 15.52 % |
| 1989 | 181.38 | 0.80 % |
| 1990 | 202.90 | 11.87 % |
| 1991 | 229.12 | 12.92 % |
| 1992 | 254.66 | 11.15 % |
| 1993 | 264.99 | 4.06 % |
| 1994 | 248.36 | -6.28 % |
| 1995 | 265.58 | 6.94 % |
| 1996 | 267.87 | 0.86 % |
| 1997 | 286.19 | 6.84 % |
| 1998 | 241.72 | -15.54 % |
| 1999 | 305.95 | 26.57 % |
| 2000 | 288.63 | -5.66 % |
| 2001 | 308.33 | 6.82 % |
| 2002 | 304.23 | -1.33 % |
| 2003 | 343.11 | 12.78 % |
| 2004 | 375.29 | 9.38 % |
| 2005 | 383.57 | 2.21 % |
| 2006 | 379.28 | -1.12 % |
| 2007 | 371.16 | -2.14 % |
| 2008 | 348.17 | -6.20 % |
| 2009 | 352.83 | 1.34 % |
| 2010 | 350.66 | -0.61 % |
|
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