68% (2020)

67% (2023)

58% (2012)

68% (2003)

67% (2002)

75% (1994)

79% (1986)

62% (1985)

62% (2024)

63% (2024)

70% (2016)

67% (2013)

53% (2009)

50% (2024)

64% (2012)

70% (2011)

76% (1960)

65% (2005)

73% (1983)

72% (2009)