40% (1972)

50% (1975)

60% (1989)

0% (2003)

75% (1975)

95% (1979)

65% (1975)

50% (1977)

68% (1957)

60% (1995)

50% (1980)

90% (1961)

47% (2001)

50% (1979)

0% (1991)

87% (1987)

0% (1991)

76% (1988)

50% (1973)

0% (1970)