73% (1970)

73% (1987)

75% (1963)

55% (1966)

63% (1962)

64% (1983)

77% (1970)

59% (1965)

60% (1964)

63% (1964)

50% (1963)

74% (1970)

77% (1992)

64% (1964)

78% (1967)

52% (1982)

57% (1969)

60% (1968)

40% (1984)

71% (1992)