69% (1992)

70% (1993)

70% (1993)

59% (1992)

65% (1991)

69% (1991)

66% (1992)

72% (1992)

53% (1992)

56% (1992)

55% (1992)

68% (1992)

62% (1991)

51% (1992)

67% (1993)

53% (1993)

59% (1993)

52% (1991)

61% (1992)