56% (1994)

63% (1992)

73% (2001)

75% (1996)

67% (1992)

54% (1996)

72% (2002)

55% (1998)

70% (1995)

45% (1997)

52% (1997)

57% (1997)

60% (1994)

65% (1997)

62% (1993)

46% (1998)

68% (1998)

62% (1993)

50% (1993)

43% (1996)