71% (2006)

67% (2015)

74% (2016)

65% (2017)

71% (2023)

57% (2024)

66% (2022)

65% (2004)

74% (1976)

71% (2018)

63% (1997)

49% (2007)

50% (2010)

68% (2012)

62% (1949)

66% (2005)

69% (2022)

62% (2015)

63% (1993)

64% (2012)