82% (1985)

67% (1975)

73% (1974)

71% (1984)

47% (1975)

52% (1981)

50% (1979)

40% (1979)

0% (1972)

40% (1990)

67% (1979)

60% (1969)

0% (1973)

85% (1974)

53% (1987)

0% (1974)

50% (1982)

50% (1959)

70% (1981)

48% (1983)