61% (1969)

56% (1965)

55% (1964)

46% (1973)

68% (1966)

40% (1963)

75% (1984)

57% (1968)

60% (1975)

62% (1968)

37% (1968)

80% (1969)

58% (1969)

80% (1965)

70% (1987)

60% (1961)

100% (1969)

75% (1969)

50% (1965)

60% (1966)