80% (1987)

57% (1981)

33% (1984)

58% (1990)

38% (1989)

38% (1964)

45% (1978)

0% (1988)

0% (1959)

50% (1961)

70% (1979)

60% (1964)

40% (1990)

28% (1957)

61% (1978)

0% (1990)

60% (1961)

80% (1988)

70% (1952)

0% (1989)