50% (1977)

68% (1980)

70% (1970)

68% (1967)

58% (1979)

63% (1966)

57% (1981)

65% (1981)

66% (1941)

70% (1963)

26% (1983)

0% (1953)

58% (1965)

70% (1939)

60% (1976)

48% (1956)

50% (1940)

48% (1982)

60% (1969)

71% (1965)