60% (1979)

50% (1966)

40% (1970)

90% (1957)

60% (1967)

30% (1965)

0% (1952)

100% (1984)

90% (1975)

80% (1983)

0% (1989)

30% (1982)

40% (1936)

80% (1989)

70% (1969)

50% (1984)

60% (1987)

60% (1982)

60% (1981)

70% (1979)