50% (1993)

50% (1981)

43% (1992)

75% (1993)

53% (1993)

75% (1989)

40% (1994)

38% (1995)

64% (1992)

52% (1980)

50% (1994)

57% (1978)

56% (1996)

55% (1981)

50% (1993)

50% (1993)

0% (1990)

52% (1986)

40% (1988)

40% (1993)