70% (1979)

71% (1971)

63% (1969)

61% (1982)

62% (1968)

51% (1969)

62% (1968)

67% (1973)

30% (1960)

60% (1979)

56% (1961)

62% (1963)

68% (1967)

67% (1966)

52% (1958)

56% (1989)

51% (1971)

50% (1982)

0% (1965)

52% (1968)