55% (1987)

66% (1989)

71% (1985)

72% (1988)

67% (1989)

55% (1988)

67% (1986)

55% (1992)

62% (1982)

70% (1989)

64% (1986)

72% (1986)

53% (1987)

55% (1988)

52% (1994)

60% (1989)

35% (1986)

48% (1991)

0% (1987)

0% (1997)