60% (1968)

54% (1991)

65% (1961)

80% (1986)

0% (1979)

60% (1956)

0% (1975)

56% (1959)

90% (1967)

57% (1987)

63% (1967)

60% (1962)

90% (1980)

66% (1986)

90% (1986)

0% (1978)

0% (1989)

0% (1982)

0% (1961)

0% (1971)