50% (1958)

53% (1995)

52% (1962)

58% (1957)

58% (1967)

50% (1982)

50% (1968)

40% (1977)

65% (1973)

0% (1970)

47% (1974)

62% (1961)

63% (1961)

0% (1990)

62% (1967)

50% (1968)

0% (1970)

50% (2000)

0% (1976)

50% (1981)