73% (1986)

72% (1982)

63% (1985)

71% (1977)

67% (1986)

63% (1979)

71% (1969)

68% (1971)

63% (1970)

70% (1986)

50% (1986)

68% (1969)

85% (1982)

80% (1990)

0% (1979)

0% (1975)

0% (1975)

90% (1976)

0% (1979)

0% (1979)