72% (2008)

61% (2017)

68% (1971)

65% (2018)

66% (2017)

75% (2009)

71% (2017)

56% (2018)

71% (2007)

61% (2003)

73% (2009)

74% (2000)

64% (2012)

62% (1980)

57% (1996)

67% (2018)

70% (1954)

62% (2017)

61% (2018)

72% (2016)