50% (1991)

67% (1968)

66% (1966)

72% (1980)

63% (1969)

72% (1971)

20% (1987)

27% (1979)

70% (1964)

66% (1972)

62% (1979)

58% (1985)

74% (1984)

20% (1994)

50% (1978)

70% (1987)

70% (1972)

55% (1965)

0% (1966)

0% (1988)