63% (1974)

90% (1962)

85% (1990)

75% (1992)

80% (1983)

0% (1975)

90% (1975)

0% (1972)

45% (1971)

80% (1980)

80% (1972)

65% (1980)

0% (1974)

60% (1984)

0% (1979)

0% (1979)