63% (1993)

80% (1996)

61% (2001)

70% (1990)

35% (1993)

70% (1993)

0% (1993)

40% (1995)

50% (1995)

60% (1989)

37% (1993)

45% (2003)

60% (1987)

51% (1991)

0% (1991)

0% (1997)

0% (1996)

0% (1994)

0% (1990)

0% (1996)