69% (2016)

64% (2001)

64% (1974)

83% (1950)

0% (1970)

58% (1989)

59% (2011)

60% (1988)

62% (2013)

62% (1986)

61% (1984)

63% (2003)

50% (2016)

71% (1984)

63% (1976)

73% (1955)

68% (1995)

66% (2019)

63% (1998)

56% (1995)