65% (1939)

62% (1981)

72% (1964)

60% (1965)

78% (1986)

78% (1961)

72% (1972)

59% (1976)

76% (1977)

71% (1966)

74% (1963)

73% (1969)

70% (1988)

47% (1977)

49% (1966)

71% (1961)

58% (1989)

71% (1988)

69% (1980)

76% (1966)