68% (1969)

51% (1966)

70% (1969)

70% (1972)

61% (1962)

60% (1958)

59% (1967)

63% (1973)

56% (1971)

42% (1971)

56% (1969)

58% (1990)

65% (1967)

67% (1967)

54% (1971)

0% (1954)

50% (1964)

50% (1954)

33% (1971)

51% (1955)