62% (2013)

59% (2014)

57% (1996)

55% (2007)

64% (2011)

67% (1996)

66% (2006)

68% (1999)

58% (2004)

58% (2003)

72% (2012)

55% (2006)

58% (1999)

79% (2003)

52% (2011)

55% (1998)

64% (2002)

58% (2006)

64% (2000)

49% (2000)