59% (2018)

56% (2015)

59% (2011)

65% (2014)

72% (2015)

56% (2012)

52% (2007)

69% (1987)

59% (2001)

69% (1997)

66% (2015)

63% (2021)

54% (2008)

72% (2009)

77% (2015)

69% (2020)

69% (2010)

65% (2014)

65% (1984)

69% (2019)