20% (1963)

50% (1938)

0% (1988)

90% (1986)

54% (1968)

0% (1980)

70% (1983)

0% (1976)

55% (1981)

60% (1987)

0% (1955)

0% (1989)

80% (1960)

60% (1969)

47% (1981)

90% (1975)

60% (1985)

52% (1955)

40% (1965)

45% (1983)