67% (2005)

65% (1995)

69% (2015)

68% (2007)

75% (2018)

72% (2016)

70% (2015)

71% (2015)

64% (1987)

65% (1996)

78% (1997)

82% (1943)

76% (1991)

67% (1992)

59% (1993)

67% (2008)

77% (1996)

61% (1986)

63% (2001)

74% (1993)