80% (1999)

71% (1996)

82% (1993)

76% (1993)

72% (1995)

70% (1995)

57% (1994)

70% (1995)

70% (1995)

58% (1995)

62% (1998)

60% (1997)

69% (1992)

54% (1996)

65% (1997)

45% (1993)

65% (1994)

61% (2007)

63% (1996)

70% (1995)