78% (2016)

44% (1999)

85% (2011)

42% (2000)

86% (1976)

56% (2003)

81% (2001)

75% (2003)

85% (2012)

76% (2005)

72% (2011)

70% (2012)

81% (2005)

66% (1993)

62% (2009)

77% (2004)

84% (2005)

74% (2007)

51% (1956)

75% (2009)