56% (1970)

66% (1954)

0% (1973)

50% (1980)

56% (1967)

59% (1967)

60% (1973)

50% (1980)

60% (1986)

0% (1989)

42% (1962)

30% (1991)

60% (1967)

0% (1974)

52% (1969)

52% (1962)

0% (1987)

0% (1976)

56% (1967)

60% (1976)