65% (1984)

58% (1983)

82% (1960)

75% (1965)

77% (1957)

73% (1966)

78% (1978)

20% (1977)

75% (1964)

69% (1964)

72% (1964)

80% (1983)

38% (1960)

55% (1986)

65% (1980)

61% (1970)

46% (1973)

54% (1991)

39% (1995)

57% (1973)