50% (1957)

50% (1961)

50% (1969)

63% (1979)

50% (1974)

50% (1961)

0% (1998)

0% (1993)

70% (1976)

0% (1985)

82% (1963)

30% (1964)

0% (1954)

65% (1955)

0% (1967)

40% (1958)

50% (1967)

60% (1957)

50% (1966)

45% (1971)