70% (1983)

70% (1993)

70% (1985)

75% (1977)

68% (1975)

70% (1984)

50% (1974)

76% (1980)

47% (1974)

75% (1989)

70% (1978)

0% (1975)

90% (1986)

50% (1977)

73% (1984)

50% (1991)

71% (1982)

80% (1981)

65% (1983)

100% (1966)