50% (1984)

65% (1983)

72% (1973)

72% (1978)

60% (1980)

65% (1982)

70% (1979)

60% (1979)

55% (1963)

67% (1983)

40% (2004)

74% (1973)

64% (1987)

0% (1971)

0% (1976)

32% (1988)

0% (1968)

64% (1982)

68% (1983)

72% (1980)