68% (2009)

78% (2000)

53% (2007)

66% (2007)

72% (2004)

81% (2014)

47% (2006)

87% (2015)

64% (2011)

72% (2004)

76% (1962)

70% (2010)

88% (2006)

70% (1974)

52% (2005)

67% (2015)

46% (2009)

62% (2008)

77% (2013)

51% (2006)