67% (2010)

69% (2012)

60% (2012)

54% (2012)

64% (2008)

47% (2015)

57% (2009)

65% (2011)

65% (2008)

43% (2007)

63% (2010)

43% (2011)

49% (2009)

60% (2007)

65% (2011)

42% (2009)

58% (2012)

62% (2008)

50% (2008)

63% (2012)