67% (1992)

80% (1994)

66% (1994)

68% (1993)

59% (1990)

77% (1991)

59% (1992)

73% (1991)

57% (1991)

46% (1991)

72% (1992)

61% (1990)

67% (1992)

57% (1992)

58% (1992)

61% (1993)

58% (1990)

56% (1978)

59% (1993)

60% (1990)