56% (1959)

75% (1979)

78% (1963)

66% (1989)

69% (1973)

70% (1978)

54% (1965)

68% (2009)

77% (1986)

75% (2015)

68% (1949)

72% (1977)

70% (1976)

78% (2014)

66% (1968)

78% (1964)

74% (2001)

72% (1998)

67% (2011)

67% (1962)