57% (1990)

40% (1979)

69% (1946)

67% (1979)

53% (1972)

10% (1990)

57% (1989)

59% (1950)

70% (1977)

47% (1960)

50% (1966)

60% (1989)

62% (1957)

47% (1985)

67% (1965)

68% (1953)

60% (1973)

64% (1980)

65% (1989)

78% (1965)