40% (1991)

51% (2013)

69% (2012)

58% (2010)

71% (2009)

76% (2014)

65% (2007)

70% (2004)

74% (1975)

57% (2014)

59% (1991)

55% (2006)

70% (2012)

64% (2007)

57% (2004)

50% (2013)

69% (2021)

56% (1987)

70% (2006)

55% (2008)