52% (1990)

0% (1987)

49% (1989)

65% (2000)

70% (1989)

10% (1993)

0% (1986)

74% (1995)

83% (1986)

42% (1994)

0% (2006)

100% (1994)

45% (1980)

0% (2004)

10% (1990)

10% (1987)

58% (1997)

60% (1995)

0% (1997)

0% (1990)