65% (2017)

72% (2015)

69% (2011)

58% (1996)

68% (1991)

68% (1964)

53% (1995)

58% (1987)

73% (2009)

49% (2006)

66% (2006)

64% (1999)

59% (2002)

78% (1952)

67% (2019)

60% (2018)

83% (2016)

56% (2016)

64% (2010)

58% (2002)