52% (1997)

59% (2001)

65% (1995)

64% (2012)

79% (1959)

74% (1940)

70% (1984)

65% (1999)

57% (1984)

73% (2007)

61% (1983)

58% (1993)

64% (2019)

70% (1988)

68% (1983)

65% (2008)

0% (1970)

63% (1994)

62% (2000)

59% (2018)