52% (1977)

50% (1989)

65% (1967)

63% (1968)

10% (1997)

50% (1969)

52% (1964)

0% (1986)

62% (1964)

50% (1962)

63% (1988)

50% (1968)

60% (1956)

53% (1988)

0% (1961)

50% (1966)

50% (1988)

0% (1983)

0% (1968)

50% (1980)