32% (1983)

31% (1975)

41% (1978)

32% (1981)

44% (1973)

60% (2013)

45% (1980)

42% (1986)

37% (1981)

43% (1977)

38% (1989)

25% (1974)

45% (1980)

52% (1976)

37% (1977)

55% (1977)

32% (1982)

27% (1982)

38% (1980)

52% (1977)