50% (1966)

0% (1986)

40% (1985)

50% (1981)

20% (1980)

20% (1981)

62% (1991)

30% (1969)

0% (1967)

0% (1979)

20% (1980)

65% (1988)

50% (1978)

25% (1974)

60% (1984)

60% (1980)

60% (1966)

0% (1978)

50% (1982)

60% (1978)