68% (1998)

71% (1994)

70% (2000)

66% (1998)

78% (1994)

71% (1995)

63% (1995)

77% (1997)

64% (1998)

69% (1999)

64% (1994)

70% (1999)

77% (2003)

72% (1998)

69% (1993)

63% (1997)

53% (1998)

100% (1996)

70% (1999)

58% (1998)