74% (1998)

49% (1976)

59% (1969)

58% (1975)

39% (1983)

64% (1970)

68% (1961)

56% (1968)

61% (2011)

52% (2002)

69% (1984)

61% (2002)

54% (2013)

51% (1998)

45% (1993)

58% (1964)

58% (2016)

67% (1976)

63% (1971)

63% (1983)