73% (1973)

69% (1963)

70% (1981)

71% (1962)

70% (1986)

61% (1994)

66% (1964)

69% (1978)

63% (1975)

67% (1972)

69% (1965)

64% (1967)

62% (1978)

64% (2016)

62% (1965)

62% (1961)

61% (1973)

40% (1969)

40% (1960)

47% (1970)