73% (2007)

80% (2009)

62% (2012)

68% (2014)

76% (2012)

67% (2010)

75% (1997)

75% (2014)

53% (2012)

73% (2001)

71% (2011)

65% (1997)

67% (2015)

64% (2012)

67% (2009)

56% (2014)

65% (2011)

65% (2014)

57% (2003)

64% (2008)