70% (1975)

64% (1966)

57% (1971)

65% (1980)

67% (1965)

80% (1963)

51% (1973)

58% (1977)

60% (1973)

51% (1970)

74% (1969)

31% (1988)

40% (1987)

0% (1969)

0% (1979)

0% (1964)

0% (1962)

40% (1975)

50% (1992)

0% (1970)