| | 1955 | | 1956 | | 1957 | | | 1958 | | 1959 | | 1960 | | 1961 | | 1962 | | | 1963 | | 1964 | | 1965 | | | 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 | | |
|
| | | | | 24.0 | 4.0 | 31.2 | 21.6 | | 29.1 | 6.0 | 37.4 | 26.3 | | 33.2 | 7.0 | 41.5 | 30.4 | | | | | | 36.0 | 10.0 | 44.0 | 36.0 | | 37.2 | 12.2 | 46.4 | 38.6 | | 41.3 | 13.5 | 54.0 | 55.5 | | 42.0 | 14.8 | 59.2 | 60.6 | | 42.2 | 18.7 | 69.5 | 66.2 | | | | | | 43.1 | 21.6 | 75.0 | 80.4 | | 48.5 | 24.7 | 85.1 | 83.7 | | 64.2 | 29.4 | 97.2 | 86.9 | | | | | | 135.8 | 58.6 | 208.1 | 97.0 | | 145.7 | 63.9 | 228.3 | 102.8 | | 150.9 | 67.9 | 250.3 | 105.0 | | | | | | 153.8 | 71.5 | 255.4 | 108.3 | | 166.5 | 68.7 | 259.9 | 116.8 | | 175.8 | 70.7 | 245.8 | 121.0 | | 183.0 | 72.4 | 241.4 | 116.8 | | 177.0 | 70.8 | 231.0 | 113.1 | | | | | | | 193.9 | 72.1 | 233.1 | 113.9 | | 210.2 | 71.5 | 238.0 | 118.3 | | 193.7 | 66.8 | 218.7 | 128.6 | | 223.0 | 69.8 | 228.6 | 130.7 | | 228.3 | 72.0 | 224.7 | 77.7 | | | | | | 233.8 | 69.8 | 209.5 | 81.3 | | 229.2 | 67.2 | | | | 243.2 | 87.0 | | | | 246.8 | 65.6 | | | | 243.6 | 65.0 | | | | | | | | 249.0 | 61.2 | | | | 209.4 | 48.8 | | | | 221.0 | 51.4 | | | | 220.1 | 49.9 | | | | 230.7 | 50.6 | | | | | | | | 230.6 | 49.5 | | | | 201.2 | | | | | 202.1 | | | | | 191.8 | | | | | 193.7 | | | | | | | | | 191.1 | | | | | | | | | | | | |