| 1978 | 1979 | 1980 | | 1981 | 1982 | 1983 | 1984 | 1985 | | 1986 | 1987 | 1988 | 1989 | 1990 | | 1991 | 1992 | 1993 | 1994 | 1995 | | 1996 | 1997 | 1998 | 1999 | 2000 | | 2001 | 2002 | 2003 | 2004 | 2005 | | 2006 | 2007 | 2008 | 2009 | | |
|
| | | | | | | | | | | | | 7.5 | | | | | | 0.1 | | | 9.8 | | | | | | 1.9 | | 0.3 | 11.4 | | | | | | | | | | | | | | | 12.3 | 1.7 | 1.7 | 13.3 | | | | | | 18.8 | 1.7 | 2.7 | 17.2 | | | | | | 28.7 | 4.3 | 7.0 | 20.6 | | | | | | 42.2 | 8.0 | 15.3 | 29.1 | | | | | | 57.5 | 32.2 | 41.9 | 34.6 | | | | | | | | | | | | | | | 75.9 | 50.9 | 61.5 | 47.4 | | | | | | 82.6 | 57.5 | 71.8 | 55.5 | | | | | | 86.0 | 69.7 | 81.2 | 59.6 | | | | | | 89.7 | 80.5 | 89.4 | 62.2 | | | | | | 93.2 | 90.9 | 96.4 | 66.5 | | | | | | | | | | | | | | | 93.0 | 97.1 | 101.7 | 72.7 | 0.1 | | | | 17.0 | 96.1 | 101.4 | 101.3 | 77.2 | 0.6 | | | | 23.2 | 99.8 | 107.2 | 100.8 | 82.4 | 1.8 | | | | 38.8 | 102.8 | 111.8 | 104.4 | 85.4 | 5.0 | | | | 45.4 | 100.4 | 113.6 | 104.4 | 86.8 | 11.8 | | | | | | | | | | | | | 52.0 | 101.4 | 119.2 | 105.4 | 87.2 | 14.2 | | | | 58.4 | 100.6 | 123.8 | 104.2 | 88.2 | 27.2 | 12.2 | 1.2 | 0.8 | 65.4 | 102.2 | 133.2 | 105.4 | 95.2 | 34.0 | 15.0 | 3.0 | 1.0 | 67.1 | 99.6 | 141.4 | 102.8 | 95.0 | 49.9 | 23.5 | 12.9 | 2.5 | 74.4 | 102.8 | 145.5 | 107.4 | 95.7 | 69.6 | 32.1 | 27.6 | 2.5 | | | | | | | | | | 78.1 | 102.2 | 148.9 | 106.6 | 100.7 | 89.7 | 45.3 | 62.4 | 2.6 | 83.5 | 98.6 | 148.4 | 101.6 | 99.6 | 106.5 | 55.5 | 94.0 | 4.1 | 85.4 | 99.3 | 147.0 | 100.4 | 103.3 | 119.3 | 68.3 | 133.7 | 6.6 | 94.1 | 102.0 | 150.6 | 102.6 | 100.4 | 135.7 | 79.4 | 164.5 | 12.6 | 97.0 | 105.0 | 152.8 | 104.0 | 109.1 | 146.5 | 89.2 | 190.0 | 14.1 | | | | | | | | | | 98.1 | 106.9 | 155.3 | 104.8 | 112.7 | 157.1 | 95.7 | 206.1 | 18.1 | 98.9 | 102.2 | 147.0 | 108.1 | 98.9 | 157.3 | 91.6 | 207.1 | 19.9 | 95.4 | 98.6 | 134.0 | 102.8 | 81.6 | 152.5 | 85.9 | 191.4 | 22.7 | 98.1 | 100.4 | 137.6 | 103.6 | 89.4 | 162.7 | 97.0 | 212.7 | 29.6 | | | | | | | | | | | | | | | | | | | |