67% (1971)

66% (1987)

78% (1992)

56% (1997)

72% (1956)

43% (1979)

81% (2011)

74% (2017)

72% (2017)

50% (2009)

48% (2007)

68% (2001)

66% (2017)

0% (1997)

44% (1959)

82% (1984)

75% (2012)

62% (2005)

70% (2006)

65% (2020)