62% (1962)

46% (1987)

36% (1986)

0% (1958)

63% (1986)

70% (1980)

35% (1983)

0% (1963)

0% (1961)

68% (1988)

50% (1990)

58% (1990)

0% (1989)

71% (1983)

58% (1963)

57% (1987)

67% (1967)

50% (1979)

0% (1980)

50% (1968)