48% (2007)

73% (1973)

75% (1968)

62% (1977)

60% (1968)

63% (1980)

73% (1966)

74% (1965)

66% (1985)

54% (1985)

69% (1961)

65% (1968)

80% (1957)

63% (1966)

65% (1974)

72% (1970)

61% (1970)

71% (2002)

72% (1968)

71% (1965)