75% (2010)

67% (2008)

62% (2010)

64% (2013)

62% (2014)

64% (2012)

66% (2011)

61% (2010)

57% (2015)

53% (2011)

63% (2017)

55% (2011)

63% (2010)

61% (2007)

54% (2012)

45% (2013)

60% (2009)

62% (2009)

43% (2006)

64% (2006)