65% (2010)

58% (2015)

63% (2013)

57% (2017)

58% (2008)

43% (2009)

60% (2009)

39% (2014)

46% (2008)

46% (2005)

56% (2006)

48% (2012)

41% (2011)

50% (2009)

46% (2008)

47% (2013)

51% (2018)

46% (2016)

51% (2016)

55% (2015)