50% (1968)

0% (1976)

63% (1961)

59% (1987)

0% (1987)

50% (1962)

50% (1955)

34% (1987)

68% (1971)

63% (1986)

63% (1963)

63% (1969)

0% (1990)

40% (2007)

40% (2001)

58% (1970)

63% (1969)

58% (1971)

70% (1965)

52% (1957)