61% (1972)

56% (1972)

59% (1979)

61% (1969)

54% (1982)

48% (1979)

42% (1982)

74% (1964)

51% (1968)

20% (1980)

47% (1976)

37% (1984)

30% (1976)

52% (1971)

70% (1976)

64% (1981)

58% (1962)

65% (1985)

0% (1969)

65% (1986)