70% (1979)

71% (1971)

66% (1966)

52% (1970)

67% (1973)

62% (1968)

64% (1965)

70% (1966)

51% (1969)

51% (1972)

62% (1969)

61% (1982)

54% (1964)

65% (1964)

52% (1968)

63% (1968)

0% (1967)

52% (1958)

50% (1964)

58% (1989)