73% (2007)

71% (1991)

80% (2009)

73% (1995)

53% (2008)

56% (2014)

70% (2009)

53% (2012)

67% (2010)

75% (2014)

71% (2011)

73% (2001)

64% (2012)

59% (2009)

65% (2014)

66% (2014)

73% (1995)

74% (2004)

62% (2012)

65% (2001)