|
| year | consumption | change |
| 1980 | 121.30 | NA |
| 1981 | 127.00 | 4.70 % |
| 1982 | 143.00 | 12.60 % |
| 1983 | 136.00 | -4.90 % |
| 1984 | 150.00 | 10.29 % |
| 1985 | 164.74 | 9.83 % |
| 1986 | 165.80 | 0.64 % |
| 1987 | 167.27 | 0.89 % |
| 1988 | 172.00 | 2.83 % |
| 1989 | 181.84 | 5.72 % |
| 1990 | 194.00 | 6.69 % |
| 1991 | 208.44 | 7.44 % |
| 1992 | 210.15 | 0.82 % |
| 1993 | 206.60 | -1.69 % |
| 1994 | 204.41 | -1.06 % |
| 1995 | 204.62 | 0.10 % |
| 1996 | 197.85 | -3.31 % |
| 1997 | 199.45 | 0.81 % |
| 1998 | 205.99 | 3.28 % |
| 1999 | 197.79 | -3.98 % |
| 2000 | 206.18 | 4.24 % |
| 2001 | 217.91 | 5.69 % |
| 2002 | 224.56 | 3.05 % |
| 2003 | 228.77 | 1.88 % |
| 2004 | 238.35 | 4.19 % |
| 2005 | 254.76 | 6.88 % |
| 2006 | 252.67 | -0.82 % |
| 2007 | 271.09 | 7.29 % |
| 2008 | 286.28 | 5.60 % |
| 2009 | 319.10 | 11.46 % |
| 2010 | 323.28 | 1.31 % |
| 2011 | 402.00 | 24.35 % |
|
|