| 1949 |
50 |
1 |
| 1958 |
63.9814814814815 |
17 |
| 1961 |
50 |
7 |
| 1962 |
59.5833333333333 |
3 |
| 1963 |
51.6666666666667 |
8 |
| 1964 |
62.5 |
2 |
| 1965 |
56.9444444444444 |
38 |
| 1966 |
56.0930952380952 |
49 |
| 1967 |
66.2505952380952 |
19 |
| 1968 |
67.6554232804233 |
17 |
| 1969 |
65.1651147594544 |
52 |
| 1970 |
69.4155328798186 |
20 |
| 1971 |
66.3922723110223 |
39 |
| 1972 |
68.2542591816785 |
30 |
| 1973 |
69.3089477572236 |
57 |
| 1974 |
69.4825968149498 |
34 |
| 1975 |
71.6621598480925 |
39 |
| 1976 |
73.5229840780688 |
58 |
| 1977 |
69.7969496621292 |
55 |
| 1978 |
71.2153155933053 |
69 |
| 1979 |
71.1343766466387 |
65 |
| 1980 |
72.2473392586766 |
89 |
| 1981 |
67.3353512003425 |
61 |
| 1982 |
64.6103791945244 |
70 |
| 1983 |
69.6225396767525 |
55 |
| 1984 |
71.0807269037061 |
60 |
| 1985 |
67.1813484452425 |
93 |
| 1986 |
68.1349253251681 |
92 |
| 1987 |
64.9703118493879 |
115 |
| 1988 |
74.2222063655875 |
61 |
| 1989 |
70.9521371136372 |
67 |
| 1990 |
69.2300500072946 |
83 |
| 1991 |
64.8461558383819 |
124 |
| 1992 |
70.7875468723031 |
89 |
| 1993 |
68.4456223449807 |
110 |
| 1994 |
67.3863985372417 |
105 |
| 1995 |
65.1401771176733 |
126 |
| 1996 |
66.393231596756 |
154 |
| 1997 |
59.8819636310759 |
237 |
| 1998 |
59.5279894316135 |
349 |
| 1999 |
60.1987621115137 |
285 |
| 2000 |
63.2139735782857 |
331 |
| 2001 |
60.9465447150108 |
301 |
| 2002 |
60.2491159585648 |
317 |
| 2003 |
68.3622029749355 |
143 |
|