74% (2006)

55% (2013)

54% (2009)

65% (2010)

57% (2013)

55% (2009)

55% (2011)

71% (2010)

59% (2010)

65% (2004)

49% (2010)

49% (2006)

66% (2002)

57% (2012)

51% (2009)

17% (2007)