62% (1976)

0% (1962)

70% (1952)

65% (1985)

0% (1986)

0% (1991)

60% (1978)

30% (1982)

60% (1986)

30% (1991)

80% (1972)

42% (1954)

0% (1980)

30% (1952)

40% (1981)

10% (1982)

0% (1988)

50% (1963)

0% (1971)

70% (1979)