60% (1968)

80% (1974)

64% (1993)

73% (1961)

64% (1957)

56% (1952)

66% (1973)

63% (1972)

50% (1962)

65% (1960)

55% (1954)

73% (1995)

70% (1983)

0% (1948)

78% (1963)

74% (1958)

80% (1950)

70% (1951)

50% (1962)

0% (1970)