55% (1969)

42% (1974)

32% (1973)

32% (1972)

59% (1974)

28% (1972)

61% (1965)

51% (1969)

44% (1971)

44% (1968)

50% (1970)

57% (1963)

10% (1972)

50% (1959)

29% (1962)

39% (1965)

53% (1968)

40% (1985)

63% (1982)

50% (1959)