50% (1981)

50% (1979)

52% (1992)

60% (2000)

0% (1952)

50% (1951)

0% (1981)

63% (1961)

62% (1975)

64% (1964)

100% (1957)

63% (1966)

57% (1988)

50% (1970)

48% (1981)

59% (1973)

0% (1957)

0% (1970)

45% (1982)

65% (1963)