79% (1996)

64% (2006)

66% (2010)

61% (2010)

50% (2008)

56% (2003)

74% (2018)

63% (2012)

71% (2010)

84% (2009)

70% (2006)

65% (2003)

70% (1970)

69% (2015)

80% (2002)

81% (2004)

70% (2000)

72% (2014)

64% (2015)

83% (1970)