76% (2009)

64% (2019)

79% (2020)

48% (2016)

67% (2011)

50% (2012)

67% (2017)

63% (2015)

61% (2016)

62% (2014)

47% (2007)

62% (2006)

53% (2008)

51% (2013)

48% (2014)

66% (2010)

58% (2015)

51% (2007)

65% (2013)

65% (2013)