73% (2001)

66% (2001)

66% (1992)

76% (2004)

62% (1992)

74% (1996)

74% (1998)

73% (2002)

60% (1994)

54% (1994)

57% (1997)

54% (1996)

65% (1997)

55% (1998)

42% (1998)

61% (1993)

61% (1993)

67% (1998)

70% (1995)

50% (1993)