69% (1996)

59% (1993)

75% (1993)

77% (1998)

60% (1995)

76% (1995)

65% (2002)

69% (1998)

65% (1994)

61% (1997)

66% (2000)

41% (2004)

54% (1999)

73% (1999)

59% (1996)

57% (1997)