27% (1983)

57% (1957)

60% (1952)

40% (1976)

70% (1981)

0% (1968)

67% (1966)

60% (1982)

60% (1975)

50% (1966)

70% (1975)

80% (1958)

50% (1978)

69% (1970)

52% (1960)

0% (1985)

28% (1985)

60% (1961)

60% (1980)

60% (1956)