70% (1980)

74% (1981)

70% (1967)

63% (1968)

63% (1982)

67% (1970)

53% (1982)

62% (1981)

65% (1964)

70% (1965)

53% (1980)

62% (1976)

59% (1980)

57% (1969)

52% (1980)

73% (1971)

67% (1964)

53% (1967)

63% (1975)

64% (1965)