67% (1969)

70% (1972)

70% (1969)

51% (1966)

56% (1971)

63% (1973)

59% (1974)

61% (1962)

62% (1958)

59% (1967)

55% (1969)

62% (1962)

58% (1990)

54% (1971)

68% (1968)

50% (1974)

33% (1971)

0% (1973)

60% (1957)

67% (1967)