25% (1961)

20% (1983)

80% (1974)

47% (1972)

0% (1986)

40% (1976)

0% (1988)

0% (1982)

0% (1968)

70% (1973)

0% (1974)

35% (1973)

50% (1956)

20% (1976)

70% (1977)

0% (1987)

0% (1979)

63% (1959)

0% (1989)

0% (1969)