56% (1990)

62% (1988)

64% (1989)

58% (1986)

30% (1988)

57% (1991)

69% (1988)

60% (1990)

63% (1987)

35% (1989)

57% (1980)

46% (1989)

68% (1990)

55% (1988)

63% (1995)

70% (1986)

70% (1987)

0% (1987)

10% (1992)

63% (1993)