|
| year | consumption | change |
| 1984 | 144.58 | NA |
| 1985 | 147.47 | 1.99 % |
| 1986 | 151.98 | 3.06 % |
| 1987 | 157.28 | 3.48 % |
| 1988 | 164.77 | 4.76 % |
| 1989 | 176.78 | 7.29 % |
| 1990 | 175.28 | -0.85 % |
| 1991 | 171.36 | -2.24 % |
| 1992 | 175.89 | 2.65 % |
| 1993 | 184.41 | 4.84 % |
| 1994 | 192.71 | 4.50 % |
| 1995 | 199.01 | 3.27 % |
| 1996 | 210.78 | 5.91 % |
| 1997 | 219.10 | 3.95 % |
| 1998 | 220.46 | 0.62 % |
| 1999 | 230.24 | 4.43 % |
| 2000 | 229.26 | -0.43 % |
| 2001 | 241.16 | 5.19 % |
| 2002 | 248.71 | 3.13 % |
| 2003 | 258.03 | 3.75 % |
| 2004 | 272.48 | 5.60 % |
| 2005 | 288.98 | 6.06 % |
| 2006 | 296.98 | 2.77 % |
| 2007 | 302.83 | 1.97 % |
| 2008 | 327.45 | 8.13 % |
| 2009 | 326.07 | -0.42 % |
| 2010 | 336.42 | 3.17 % |
|
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