35% (1975)

0% (1972)

70% (1972)

0% (1979)

50% (1976)

77% (1984)

0% (1967)

0% (1981)

0% (1963)

20% (1976)

40% (1977)

50% (1978)

0% (1981)

50% (1968)

80% (1974)

0% (1974)

60% (1977)

55% (1957)

30% (1986)

60% (1984)