70% (1983)

69% (1975)

76% (1977)

100% (1966)

33% (1974)

50% (1977)

71% (1982)

90% (1986)

70% (1984)

95% (1984)

67% (1973)

66% (1986)

47% (1974)

70% (1993)

73% (1984)

75% (1989)

65% (1983)

70% (1985)

70% (1978)

50% (1991)