|
| year | consumption | change |
| 1984 | 234.46 | NA |
| 1985 | 212.22 | -9.49 % |
| 1986 | 207.67 | -2.15 % |
| 1987 | 199.97 | -3.70 % |
| 1988 | 251.34 | 25.69 % |
| 1989 | 290.03 | 15.39 % |
| 1990 | 333.10 | 14.85 % |
| 1991 | 403.15 | 21.03 % |
| 1992 | 465.15 | 15.38 % |
| 1993 | 495.05 | 6.43 % |
| 1994 | 541.28 | 9.34 % |
| 1995 | 558.56 | 3.19 % |
| 1996 | 544.70 | -2.48 % |
| 1997 | 574.80 | 5.53 % |
| 1998 | 431.99 | -24.85 % |
| 1999 | 469.03 | 8.58 % |
| 2000 | 487.16 | 3.87 % |
| 2001 | 484.94 | -0.46 % |
| 2002 | 461.93 | -4.74 % |
| 2003 | 457.18 | -1.03 % |
| 2004 | 438.72 | -4.04 % |
| 2005 | 433.69 | -1.15 % |
| 2006 | 417.24 | -3.79 % |
| 2007 | 397.08 | -4.83 % |
| 2008 | 331.72 | -16.46 % |
| 2009 | 320.45 | -3.40 % |
| 2010 | 313.45 | -2.19 % |
|
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