58% (1957)

75% (1979)

54% (1980)

37% (1984)

67% (1964)

40% (1981)

48% (1986)

55% (1941)

68% (1970)

0% (1959)

50% (1984)

53% (1973)

56% (1967)

49% (1954)

50% (1969)

0% (1987)

72% (1961)

60% (1960)

67% (1939)

64% (1975)