63% (1965)

64% (1959)

65% (1966)

38% (1992)

66% (1969)

64% (1961)

64% (1958)

66% (1964)

65% (1963)

57% (1960)

59% (1964)

60% (1970)

65% (1968)

61% (1962)

64% (1959)

68% (1965)

64% (1960)

61% (1964)

59% (1963)

57% (1960)