40% (1964)

0% (1966)

70% (1990)

0% (1977)

0% (1972)

90% (1959)

0% (1987)

40% (1961)

0% (1983)

65% (1989)

63% (1968)

20% (1961)

10% (1989)

60% (1979)

0% (1980)

20% (1965)

60% (1982)

0% (1979)

60% (1972)

0% (1957)