70% (1979)

70% (1971)

61% (1982)

68% (1973)

64% (1965)

51% (1972)

66% (1966)

56% (1989)

68% (1967)

63% (1969)

62% (1968)

70% (1966)

51% (1969)

70% (1977)

60% (1979)

50% (1963)

70% (1966)

30% (1960)

54% (1964)

43% (1958)