66% (2002)

75% (1996)

70% (1993)

66% (1995)

0% (1998)

63% (2001)

76% (1991)

0% (2002)

60% (1991)

50% (1990)

75% (1991)

80% (1994)

0% (1992)

30% (1992)

73% (1996)

0% (1992)

80% (1997)

65% (1996)

0% (2003)

0% (1992)