73% (2001)

62% (1992)

76% (2004)

75% (1996)

73% (2002)

74% (1998)

67% (1992)

54% (1994)

65% (1997)

57% (1997)

54% (1996)

45% (1998)

55% (1998)

47% (1997)

70% (1995)

57% (1997)

61% (1993)

60% (1994)

67% (1998)

52% (1997)