0% (1993)

53% (1995)

85% (1995)

30% (1991)

43% (1994)

50% (1994)

48% (1993)

52% (1994)

40% (1996)

40% (1992)

42% (1994)

50% (1991)

41% (1989)

60% (1991)

33% (1992)

0% (1990)

32% (1991)

70% (1990)

0% (1993)

53% (1996)