60% (1972)

0% (1977)

0% (1986)

20% (1985)

56% (1972)

20% (1971)

20% (1977)

35% (1988)

54% (1977)

60% (1969)

0% (1986)

0% (1970)

20% (1974)

50% (1973)

0% (1964)

0% (1988)

0% (1962)

0% (1969)

50% (1986)

50% (1968)