|
| year | consumption | change |
| 1984 | 21.97 | NA |
| 1985 | 21.74 | -1.05 % |
| 1986 | 21.86 | 0.58 % |
| 1987 | 22.35 | 2.22 % |
| 1988 | 27.28 | 22.09 % |
| 1989 | 39.40 | 44.40 % |
| 1990 | 68.32 | 73.42 % |
| 1991 | 70.15 | 2.67 % |
| 1992 | 93.58 | 33.41 % |
| 1993 | 118.52 | 26.65 % |
| 1994 | 131.07 | 10.59 % |
| 1995 | 171.69 | 30.99 % |
| 1996 | 201.28 | 17.24 % |
| 1997 | 198.16 | -1.55 % |
| 1998 | 146.21 | -26.22 % |
| 1999 | 211.25 | 44.48 % |
| 2000 | 191.43 | -9.38 % |
| 2001 | 171.68 | -10.31 % |
| 2002 | 164.57 | -4.14 % |
| 2003 | 150.35 | -8.64 % |
| 2004 | 122.32 | -18.64 % |
| 2005 | 112.01 | -8.43 % |
| 2006 | 90.12 | -19.54 % |
| 2007 | 75.87 | -15.81 % |
| 2008 | 78.42 | 3.35 % |
| 2009 | 79.53 | 1.42 % |
| 2010 | 83.53 | 5.04 % |
|
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