58% (2005)

67% (2015)

57% (1984)

62% (2007)

66% (2012)

70% (2004)

68% (2011)

74% (1989)

77% (1968)

58% (2004)

59% (2014)

71% (2018)

66% (2006)

72% (1994)

68% (2017)

78% (1988)

59% (2007)

77% (2000)

64% (2006)

52% (2007)