70% (1992)

0% (1986)

0% (1992)

70% (1988)

50% (1996)

0% (1997)

0% (2004)

0% (1999)

0% (1994)

0% (1987)

60% (1993)

0% (1988)

66% (1997)

10% (1987)

0% (1990)

60% (2000)

0% (1988)

0% (1991)

0% (1997)

63% (2001)