69% (2023)

67% (2000)

70% (1977)

61% (2011)

61% (1961)

59% (2010)

60% (2001)

61% (2014)

51% (2024)

55% (2014)

65% (2023)

65% (2023)

65% (2007)

50% (1986)

65% (2007)

61% (1990)

57% (2011)

60% (2010)

71% (2011)

67% (1965)