68% (2024)

75% (2009)

78% (2012)

71% (2005)

62% (2017)

77% (1969)

74% (1973)

73% (1990)

71% (1977)

72% (1977)

65% (2020)

58% (1976)

74% (1996)

69% (1990)

75% (1986)

54% (2015)

66% (2014)

70% (1967)

64% (1969)

68% (1982)