71% (1950)

70% (2006)

77% (2012)

58% (2008)

69% (2001)

67% (2010)

78% (2003)

62% (2009)

65% (1997)

46% (1986)

78% (2008)

60% (2021)

64% (2012)

69% (2022)

66% (1981)

63% (2020)

59% (2019)

66% (1975)

71% (1987)

73% (2021)