50% (1979)

68% (2015)

58% (2012)

50% (1989)

70% (1953)

53% (2004)

36% (1965)

72% (1984)

63% (1995)

75% (2009)

75% (1982)

37% (1957)

70% (2012)

66% (1966)

62% (1989)

64% (1960)

67% (2014)

69% (1974)

62% (1959)

75% (1960)