70% (1972)

77% (1979)

77% (1957)

83% (1980)

71% (1976)

69% (1978)

68% (1983)

0% (1980)

0% (1986)

78% (1988)

0% (1975)

84% (1969)

77% (1983)

45% (1979)

0% (1980)

0% (1970)

88% (1982)

82% (1975)

80% (1984)

60% (1993)