75% (2015)

71% (2023)

70% (2018)

71% (1985)

66% (2011)

69% (1982)

61% (2016)

69% (2006)

73% (1979)

58% (1990)

57% (2015)

79% (1980)

56% (2011)

68% (1972)

54% (2006)

62% (2004)

61% (1981)

67% (1974)

61% (1988)

70% (1967)