70% (1968)

64% (1981)

60% (1982)

48% (1966)

54% (1961)

45% (1966)

65% (1957)

67% (1967)

50% (1990)

71% (1969)

74% (1989)

63% (1987)

63% (1963)

60% (1963)

50% (1965)

71% (1965)

65% (1960)

50% (1962)

55% (1962)

50% (1983)