68% (2015)

73% (2015)

69% (1998)

62% (2000)

58% (2011)

60% (2008)

68% (2004)

70% (2014)

56% (2013)

67% (2012)

64% (2000)

57% (2003)

74% (2003)

72% (2014)

53% (2012)

65% (2009)

67% (2001)

63% (2001)

66% (2015)

50% (2010)