50% (1982)

0% (1961)

63% (1978)

0% (1982)

80% (1972)

0% (1971)

70% (1974)

0% (1957)

0% (1962)

50% (1973)

70% (1987)

0% (1962)

60% (1989)

0% (1987)

40% (1979)

53% (1985)

50% (1988)

0% (1979)

60% (1982)

40% (1996)