70% (1972)

77% (1957)

66% (1970)

80% (1987)

68% (1971)

62% (1984)

70% (1968)

10% (1987)

60% (1967)

78% (1988)

0% (1968)

70% (1988)

0% (1966)

74% (1988)

0% (1975)

87% (1971)

82% (1989)

60% (1967)

0% (1972)

80% (1970)