68% (1989)

70% (2016)

61% (2000)

62% (2007)

58% (2002)

48% (1983)

59% (1963)

61% (1959)

59% (2020)

71% (1975)

56% (2013)

62% (2010)

65% (2024)

32% (1958)

72% (2016)

58% (2005)

78% (1977)

54% (1987)

53% (2023)

31% (2009)