58% (2006)

55% (2009)

47% (2007)

51% (2013)

57% (2012)

57% (2012)

55% (2005)

53% (2013)

51% (2006)

53% (2012)

63% (2012)

58% (2011)

40% (2011)

50% (2010)

50% (2012)

48% (2011)

44% (2011)

50% (2013)

60% (2015)

55% (2012)