52% (1988)

63% (1990)

69% (2002)

80% (1987)

0% (1981)

50% (2002)

0% (1998)

68% (1993)

58% (1984)

71% (1999)

0% (1990)

67% (2002)

0% (2002)

0% (2002)

70% (1997)

55% (1985)

65% (2006)

0% (1980)

70% (1981)

0% (1974)