41% (1986)

54% (1988)

51% (1987)

58% (1989)

66% (1987)

33% (1988)

37% (1987)

61% (1988)

48% (1988)

33% (1986)

0% (1984)

0% (1987)

51% (1988)

60% (1989)

59% (1994)

48% (1989)

0% (1990)

0% (1987)

0% (1989)

40% (1990)