62% (1994)

77% (1996)

76% (1997)

75% (1999)

60% (1990)

67% (1992)

71% (1990)

74% (2002)

61% (2000)

58% (1995)

41% (1996)

62% (2002)

59% (1989)

57% (1992)

0% (1993)

66% (1993)

60% (1997)

0% (1995)

64% (2002)

47% (1994)