60% (1980)

44% (1974)

46% (1975)

50% (1983)

43% (1962)

48% (1985)

41% (1980)

53% (1985)

65% (1980)

58% (1987)

46% (1980)

53% (1973)

48% (1982)

39% (1978)

59% (1986)

37% (1985)

53% (1982)

42% (1974)

30% (1963)

36% (1973)