69% (1990)

66% (1990)

67% (1993)

50% (1989)

70% (1988)

63% (1989)

71% (1990)

60% (1993)

47% (1990)

37% (1991)

32% (1990)

50% (1989)

0% (1989)

20% (1991)

50% (1993)