78% (2024)

71% (2021)

76% (2017)

71% (2015)

60% (2010)

66% (1980)

56% (2020)

55% (2017)

64% (2014)

61% (2012)

65% (1999)

77% (2002)

41% (2008)

61% (2006)

64% (2024)

64% (2020)

70% (1957)

67% (2006)

71% (2020)

66% (2021)