10% (1981)

53% (1966)

70% (1961)

56% (1967)

0% (1970)

50% (1963)

50% (1987)

80% (1977)

60% (1987)

10% (1983)

45% (1960)

20% (1984)

0% (1988)

60% (1974)

75% (1980)

0% (1965)

0% (1989)

57% (1973)

0% (1980)

40% (1978)