58% (1986)

56% (1990)

64% (1989)

62% (1988)

40% (1988)

60% (1990)

69% (1988)

0% (1990)

57% (1991)

60% (1995)

46% (1989)

0% (1988)

68% (1990)

55% (1988)

57% (1980)

70% (1986)

10% (1992)

35% (1989)

63% (1987)

70% (1987)