30% (1971)

30% (1986)

50% (1972)

43% (1989)

70% (1961)

70% (1976)

60% (1981)

0% (1988)

60% (1966)

0% (1963)

60% (1953)

20% (1962)

0% (1959)

60% (1952)

60% (1987)

70% (1960)

60% (1958)

0% (1989)

0% (1971)

0% (1971)