57% (2016)

54% (2015)

63% (2010)

70% (2009)

58% (2012)

59% (2015)

48% (2014)

63% (2014)

65% (2010)

55% (2007)

53% (2011)

62% (2012)

58% (2009)

64% (2012)

48% (2012)

64% (2004)

72% (2000)

53% (2012)

66% (2004)

56% (2011)