35% (1970)

0% (1986)

70% (1988)

0% (1975)

0% (1988)

0% (1954)

60% (1960)

0% (1987)

75% (1987)

60% (1966)

44% (1988)

69% (1968)

50% (1956)

80% (1984)

0% (1980)

72% (1983)

50% (1959)

65% (1973)

60% (1988)

80% (1986)