65% (2015)

68% (2005)

54% (2015)

63% (1993)

76% (2003)

67% (1968)

66% (1979)

56% (1962)

69% (2001)

72% (1988)

79% (1951)

77% (1952)

69% (1957)

78% (2010)

65% (1960)

68% (1950)

37% (1954)

75% (1999)

72% (1994)

61% (1972)