57% (1992)

77% (1991)

59% (1992)

59% (1990)

74% (1991)

57% (1991)

80% (1994)

67% (1992)

58% (1992)

72% (1992)

67% (1992)

46% (1991)

61% (1993)

56% (1978)

68% (1994)

61% (1990)

59% (1993)

48% (1993)

63% (1990)

62% (1991)