62% (1992)

63% (1975)

63% (1993)

71% (1965)

66% (1972)

71% (1958)

62% (1974)

63% (1967)

59% (1978)

64% (1969)

55% (1959)

73% (1987)

70% (1970)

56% (1994)

67% (1972)

57% (1962)

63% (1977)

63% (1982)

53% (1991)

55% (1957)