77% (1990)

60% (1990)

63% (1985)

64% (1997)

62% (1989)

65% (1980)

56% (2001)

58% (2001)

60% (1994)

64% (1972)

64% (2003)

74% (1933)

52% (2002)

68% (1973)

55% (1991)

67% (1974)

70% (1986)

72% (1964)

61% (2020)

77% (1949)