50% (1967)

65% (1968)

0% (1951)

10% (1966)

75% (1986)

56% (1970)

50% (1987)

60% (1964)

30% (1962)

80% (1969)

80% (1955)

48% (1965)

55% (1986)

20% (1982)

68% (1987)

57% (1957)

0% (1977)

0% (1983)

61% (1959)

80% (1984)