51% (2016)

66% (2020)

69% (1993)

59% (2018)

74% (2019)

58% (2005)

58% (2004)

65% (2011)

59% (1974)

64% (2009)

77% (2019)

65% (1968)

68% (2010)

69% (2011)

67% (2016)

67% (2013)

54% (2007)

63% (2014)

73% (2000)

57% (2010)