|
| year | consumption | change |
| 1984 | 141.92 | NA |
| 1985 | 149.55 | 5.38 % |
| 1986 | 164.53 | 10.02 % |
| 1987 | 184.56 | 12.17 % |
| 1988 | 215.33 | 16.67 % |
| 1989 | 242.10 | 12.43 % |
| 1990 | 279.13 | 15.30 % |
| 1991 | 328.49 | 17.68 % |
| 1992 | 366.37 | 11.53 % |
| 1993 | 397.59 | 8.52 % |
| 1994 | 433.45 | 9.02 % |
| 1995 | 481.19 | 11.01 % |
| 1996 | 502.66 | 4.46 % |
| 1997 | 487.94 | -2.93 % |
| 1998 | 359.92 | -26.24 % |
| 1999 | 376.27 | 4.54 % |
| 2000 | 379.14 | 0.76 % |
| 2001 | 385.95 | 1.80 % |
| 2002 | 402.82 | 4.37 % |
| 2003 | 423.12 | 5.04 % |
| 2004 | 417.06 | -1.43 % |
| 2005 | 413.85 | -0.77 % |
| 2006 | 412.22 | -0.39 % |
| 2007 | 419.05 | 1.66 % |
| 2008 | 388.32 | -7.33 % |
| 2009 | 385.63 | -0.69 % |
| 2010 | 393.48 | 2.03 % |
|
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