68% (2015)

54% (2014)

45% (1975)

76% (1949)

53% (2008)

58% (2022)

64% (2013)

47% (1997)

66% (2019)

71% (2012)

70% (2022)

69% (1986)

63% (2011)

68% (1968)

74% (2002)

73% (1999)

62% (2003)

63% (1968)

65% (2003)

64% (2021)