61% (1972)

56% (1972)

59% (1979)

61% (1969)

52% (1971)

42% (1982)

58% (1985)

63% (1972)

48% (1979)

51% (1968)

70% (1984)

55% (1984)

22% (1984)

30% (1976)

43% (1978)

55% (1964)

50% (1971)

49% (1979)

0% (1969)

59% (1984)