62% (1979)

48% (1981)

55% (1991)

40% (1981)

30% (1979)

50% (1978)

0% (1984)

67% (1965)

57% (1987)

60% (1960)

0% (1985)

0% (1984)

63% (1965)

65% (1965)

60% (1959)

30% (1970)

20% (1986)

40% (1966)

56% (1990)

20% (1965)