72% (2005)

65% (2006)

70% (2009)

55% (2013)

61% (2004)

68% (2003)

55% (2004)

55% (2011)

54% (2003)

61% (2006)

58% (2004)

59% (2003)

61% (2006)

56% (2007)

56% (2002)

49% (2003)

39% (2012)