61% (2015)

77% (2013)

54% (1998)

64% (1998)

66% (2013)

64% (1999)

67% (2002)

68% (2016)

76% (2015)

52% (2015)

54% (1997)

59% (1989)

62% (2008)

59% (1988)

66% (1980)

64% (2011)

63% (2001)

58% (1984)

71% (1941)

78% (2009)