42% (1987)

50% (1980)

51% (1982)

38% (1976)

23% (1986)

59% (1986)

38% (1988)

52% (1988)

65% (1987)

40% (1987)

0% (1983)

50% (1986)

60% (1987)

0% (1969)

0% (1984)

43% (1987)

70% (1970)

70% (1986)