80% (1999)

76% (1993)

72% (1996)

69% (1992)

82% (1993)

72% (1995)

58% (1994)

71% (1995)

59% (1995)

70% (1995)

65% (1997)

71% (1995)

63% (1996)

62% (1998)

45% (1993)

58% (1992)

62% (1992)

58% (2006)

62% (1996)

72% (1993)