40% (1980)

30% (1984)

65% (1987)

50% (2004)

50% (1988)

60% (1983)

0% (1957)

68% (1993)

0% (1996)

0% (2000)

65% (1985)

0% (1966)

50% (2006)

30% (2010)

63% (1979)

50% (1996)

0% (2009)

0% (2002)

62% (1955)

0% (1977)