75% (1996)

62% (1992)

55% (1998)

73% (2001)

54% (1996)

55% (1994)

62% (1993)

73% (2002)

57% (1997)

50% (1993)

60% (1994)

70% (1995)

54% (1998)

52% (1997)

66% (1992)

45% (1997)

46% (1998)

76% (1994)

62% (1993)

65% (1997)