64% (1971)

77% (1995)

77% (2023)

79% (2002)

71% (2010)

73% (2011)

74% (2014)

81% (1978)

81% (1999)

76% (1988)

81% (1975)

73% (2009)

82% (2015)

68% (2013)

82% (2021)

65% (2016)

82% (2020)

70% (2006)

80% (1999)

74% (2003)