50% (1983)

60% (1981)

0% (1985)

80% (1991)

77% (1959)

40% (1983)

67% (1988)

50% (1986)

25% (1977)

57% (1977)

80% (1990)

10% (1991)

60% (1975)

0% (1978)

35% (1968)

40% (1962)

60% (1957)

0% (1982)

0% (1969)

0% (1987)