63% (1990)

49% (1988)

50% (2002)

0% (1977)

0% (1969)

71% (2002)

0% (1999)

0% (1969)

85% (1973)

65% (1999)

0% (1986)

68% (2006)

90% (1979)

40% (1990)

73% (2003)

50% (1993)

59% (1999)

0% (1977)

49% (1984)

70% (1987)