|
| year | consumption | change |
| 1984 | 123.54 | NA |
| 1985 | 137.99 | 11.70 % |
| 1986 | 160.80 | 16.53 % |
| 1987 | 162.01 | 0.75 % |
| 1988 | 183.18 | 13.07 % |
| 1989 | 175.52 | -4.19 % |
| 1990 | 182.13 | 3.77 % |
| 1991 | 187.62 | 3.01 % |
| 1992 | 186.82 | -0.43 % |
| 1993 | 199.10 | 6.57 % |
| 1994 | 187.78 | -5.69 % |
| 1995 | 183.14 | -2.47 % |
| 1996 | 190.49 | 4.01 % |
| 1997 | 193.02 | 1.33 % |
| 1998 | 192.48 | -0.28 % |
| 1999 | 200.18 | 4.00 % |
| 2000 | 208.85 | 4.33 % |
| 2001 | 232.26 | 11.21 % |
| 2002 | 229.36 | -1.25 % |
| 2003 | 216.14 | -5.77 % |
| 2004 | 237.19 | 9.74 % |
| 2005 | 275.47 | 16.14 % |
| 2006 | 286.51 | 4.01 % |
| 2007 | 269.17 | -6.05 % |
| 2008 | 257.51 | -4.33 % |
| 2009 | 237.16 | -7.90 % |
| 2010 | 224.18 | -5.47 % |
|
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