67% (2010)

69% (2012)

54% (2012)

60% (2012)

65% (2008)

65% (2011)

57% (2009)

63% (2010)

47% (2015)

43% (2007)

58% (2011)

64% (2008)

43% (2011)

46% (2009)

50% (2008)

49% (2009)

42% (2009)

62% (2008)

65% (2011)

58% (2012)