68% (1994)

67% (1992)

61% (1990)

62% (1993)

59% (1990)

72% (1993)

45% (1990)

66% (1994)

59% (1992)

60% (1993)

41% (1993)

69% (1990)

53% (1980)

69% (1993)

48% (1992)

69% (1990)

0% (1991)

43% (1994)

50% (1980)

50% (1992)