73% (1986)

72% (1982)

63% (1985)

71% (1977)

63% (1979)

68% (1971)

70% (1986)

67% (1986)

71% (1969)

85% (1982)

80% (1990)

0% (1979)

50% (1986)

64% (1970)

68% (1969)

0% (1966)

0% (1983)

0% (1975)

0% (1979)

0% (1979)