100% (1966)

70% (1983)

69% (1975)

50% (1977)

76% (1977)

71% (1982)

67% (1973)

70% (1993)

95% (1984)

65% (1986)

75% (1989)

47% (1974)

33% (1974)

70% (1985)

90% (1986)

70% (1984)

50% (1991)

65% (1983)

75% (1989)

70% (1978)