57% (1975)

78% (1972)

0% (1963)

50% (1976)

61% (1971)

70% (1977)

45% (1972)

0% (1960)

69% (1986)

0% (1977)

59% (1971)

0% (1990)

0% (1968)

0% (1966)

53% (1974)

58% (1989)

80% (1964)

0% (1967)

64% (1980)

66% (1976)