57% (1971)

80% (1965)

60% (1982)

55% (1989)

57% (1964)

56% (1971)

54% (1983)

43% (1979)

50% (1970)

44% (1975)

35% (1974)

27% (1986)

35% (1984)

61% (1972)

61% (1972)

55% (1968)

0% (1986)

61% (1971)

42% (1992)

30% (1973)