62% (1977)

66% (2011)

74% (2018)

71% (2018)

61% (2014)

76% (2020)

57% (2004)

69% (1985)

72% (2012)

64% (2017)

60% (2019)

64% (2004)

67% (1998)

68% (2011)

61% (2008)

79% (2020)

70% (2009)

63% (2020)

67% (2017)

50% (2017)