55% (2009)

46% (2007)

51% (2013)

56% (2012)

63% (2012)

58% (2006)

57% (2012)

51% (2006)

55% (2005)

53% (2012)

58% (2011)

53% (2013)

50% (2012)

47% (2011)

60% (2015)

40% (2011)

55% (2012)

50% (2013)

71% (2016)

44% (2011)