72% (2011)

76% (2007)

61% (2011)

56% (2006)

57% (2007)

55% (2005)

60% (2008)

55% (2011)

62% (2008)

65% (2009)

51% (2010)

62% (2005)

76% (2006)

52% (2009)

60% (2011)

57% (2018)

51% (2011)

59% (2007)

55% (2010)

66% (2010)