57% (1986)

62% (1986)

65% (1987)

46% (1987)

70% (1985)

63% (1985)

58% (1987)

49% (1986)

60% (1986)

57% (1989)

57% (1987)

48% (1986)

73% (1988)

66% (1982)

60% (1985)

55% (1985)

49% (1986)

62% (1985)

62% (1982)

0% (1969)