32% (1987)

64% (1993)

63% (1992)

67% (1990)

56% (1993)

42% (1988)

0% (1991)

63% (1994)

59% (1988)

52% (1989)

53% (1990)

52% (1988)

61% (1989)

44% (1990)

56% (1987)

58% (1996)

63% (1986)

49% (1989)

33% (1986)

42% (1987)