|
| year | consumption | change |
| 1980 | 202.00 | NA |
| 1981 | 214.00 | 5.94 % |
| 1982 | 222.00 | 3.74 % |
| 1983 | 220.00 | -0.90 % |
| 1984 | 235.00 | 6.82 % |
| 1985 | 227.00 | -3.40 % |
| 1986 | 257.33 | 13.36 % |
| 1987 | 285.06 | 10.78 % |
| 1988 | 304.12 | 6.69 % |
| 1989 | 329.21 | 8.25 % |
| 1990 | 363.00 | 10.26 % |
| 1991 | 388.68 | 7.07 % |
| 1992 | 420.28 | 8.13 % |
| 1993 | 469.19 | 11.64 % |
| 1994 | 502.53 | 7.11 % |
| 1995 | 512.21 | 1.93 % |
| 1996 | 586.33 | 14.47 % |
| 1997 | 629.88 | 7.43 % |
| 1998 | 650.23 | 3.23 % |
| 1999 | 643.48 | -1.04 % |
| 2000 | 660.30 | 2.61 % |
| 2001 | 707.56 | 7.16 % |
| 2002 | 698.04 | -1.35 % |
| 2003 | 668.30 | -4.26 % |
| 2004 | 745.66 | 11.57 % |
| 2005 | 808.58 | 8.44 % |
| 2006 | 828.96 | 2.52 % |
| 2007 | 889.59 | 7.31 % |
| 2008 | 1,006.52 | 13.14 % |
| 2009 | 1,169.61 | 16.20 % |
| 2010 | 1,380.06 | 17.99 % |
| 2011 | 896.00 | -35.08 % |
|
|