72% (2015)

68% (2015)

62% (2000)

60% (2008)

69% (1998)

72% (2014)

70% (2014)

68% (2004)

57% (2003)

63% (2000)

57% (2011)

56% (2013)

62% (2001)

58% (2009)

67% (2012)

66% (2009)

75% (2003)

68% (2001)

53% (2012)

50% (2010)