50% (1963)

79% (1964)

51% (1959)

80% (1961)

70% (2011)

80% (2002)

57% (1962)

69% (1971)

63% (1975)

67% (1986)

64% (1997)

75% (1961)

68% (1976)

72% (2015)

77% (1988)

76% (1969)

67% (1979)

80% (1973)

40% (1960)

61% (2016)