61% (2001)

51% (2011)

68% (2015)

64% (2004)

58% (2011)

61% (2001)

63% (2007)

63% (2001)

68% (2007)

62% (2015)

62% (2014)

60% (2003)

66% (2008)

44% (2009)

71% (2005)

58% (2005)

65% (2007)

40% (2008)

67% (2008)

63% (2002)