68% (2015)

73% (2015)

68% (2004)

70% (2014)

57% (2003)

57% (2011)

69% (1998)

74% (2003)

59% (2008)

61% (2000)

67% (2012)

72% (2014)

50% (2000)

64% (2000)

65% (2009)

56% (2013)

50% (2010)

63% (2001)

58% (2009)

53% (2012)