66% (2001)

73% (2001)

66% (1992)

63% (1992)

60% (1994)

74% (1998)

76% (2004)

57% (1997)

74% (1996)

73% (2002)

54% (1994)

61% (1993)

56% (1997)

54% (1996)

76% (1994)

61% (1993)

65% (1997)

55% (1998)

70% (1995)

42% (1998)