53% (1972)

50% (1969)

43% (1986)

52% (1977)

49% (1971)

0% (1990)

55% (1968)

71% (1967)

60% (1964)

58% (1977)

30% (1980)

68% (1973)

45% (1971)

57% (1970)

70% (1972)

62% (1962)

55% (1987)

66% (1984)

60% (1964)

45% (1969)