72% (2003)

68% (1997)

71% (1993)

72% (1995)

74% (1985)

60% (2017)

76% (2011)

57% (1963)

77% (1997)

67% (1999)

78% (1991)

78% (2008)

66% (2019)

82% (2012)

78% (1954)

79% (2001)

78% (2015)

70% (1992)

68% (2004)

72% (1992)