55% (2009)

63% (2012)

59% (2011)

56% (2012)

53% (2012)

62% (2007)

50% (2013)

57% (2006)

56% (2005)

53% (2013)

45% (2011)

51% (2006)

48% (2011)

57% (2012)

50% (2013)

49% (2010)

61% (2015)

41% (2011)

52% (2012)

57% (2011)