73% (2021)

65% (2019)

56% (2016)

67% (2009)

73% (1981)

62% (2024)

57% (2015)

66% (1949)

51% (2023)

56% (2023)

46% (1993)

78% (1987)

70% (2022)

82% (1960)

59% (2017)

67% (2022)

57% (1994)

65% (2010)

72% (2011)

67% (2013)