45% (1970)

60% (1978)

56% (1977)

62% (1958)

50% (1984)

50% (1990)

66% (1982)

66% (1957)

55% (1985)

58% (1983)

62% (1975)

58% (1985)

52% (1964)

50% (1990)

58% (2009)

53% (1972)

65% (1967)

50% (1978)

42% (1982)

43% (1984)