70% (1980)

53% (1980)

70% (1967)

74% (1981)

67% (1970)

65% (1964)

70% (1965)

62% (1982)

63% (1968)

63% (1981)

53% (1982)

73% (1971)

63% (1965)

62% (1980)

53% (1967)

64% (1965)

62% (1966)

62% (1976)

66% (1971)

66% (1973)