68% (2002)

64% (2003)

63% (2002)

60% (1993)

57% (2001)

47% (1994)

62% (1996)

67% (2002)

47% (1992)

80% (1998)

56% (1991)

0% (1993)

0% (1993)

0% (1994)

57% (1993)

26% (1993)

60% (1988)

0% (1993)

0% (1992)

34% (1993)