55% (2009)

55% (2013)

39% (2010)

52% (2014)

62% (2012)

45% (2001)

39% (2011)

45% (2007)

55% (2009)

42% (2007)

48% (2010)

42% (2012)

59% (2010)

57% (2010)

58% (2015)

60% (2014)

47% (2014)

61% (2002)

67% (2014)

45% (2012)