74% (2013)

55% (2012)

55% (2020)

62% (2021)

71% (2022)

77% (2019)

65% (2011)

63% (1997)

54% (1977)

64% (1981)

81% (1963)

69% (2005)

67% (2006)

67% (2010)

67% (1994)

65% (2000)

61% (2012)

55% (1984)

66% (2009)

55% (2011)