78% (1977)

81% (1977)

77% (1988)

60% (1957)

70% (1957)

74% (2001)

42% (1957)

75% (1984)

58% (1955)

71% (1989)

67% (1986)

64% (2009)

53% (1959)

75% (2018)

66% (2012)

67% (1969)

68% (1979)

68% (1998)

72% (1975)

70% (1990)