75% (2000)

56% (2003)

75% (1995)

69% (1997)

76% (1994)

72% (1993)

74% (2002)

70% (2001)

60% (2001)

70% (1995)

61% (2000)

64% (1999)

75% (1998)

63% (2002)

72% (2003)

70% (1999)

61% (2002)

64% (2002)

55% (1996)

65% (2001)