69% (1975)

100% (1966)

70% (1983)

70% (1993)

50% (1974)

76% (1977)

50% (1991)

67% (1973)

0% (1983)

95% (1984)

65% (1983)

70% (1985)

50% (1977)

70% (1984)

75% (1989)

73% (1984)

70% (1978)

76% (1980)

90% (1986)

65% (1986)