72% (1987)

59% (1987)

55% (1975)

43% (1977)

60% (1980)

62% (1969)

48% (1976)

30% (1982)

58% (1978)

60% (1991)

46% (1977)

50% (1979)

25% (1990)

50% (1982)

70% (1980)

39% (1976)

58% (1982)

43% (1984)

0% (1973)

44% (1965)