76% (2010)

67% (2008)

63% (2014)

64% (2012)

63% (2010)

66% (2011)

64% (2013)

54% (2011)

57% (2015)

63% (2017)

62% (2009)

53% (2008)

61% (2007)

62% (2010)

51% (2000)

56% (2011)

60% (2009)

55% (2012)

65% (2006)

54% (2009)