76% (1985)

69% (1979)

77% (1988)

76% (1984)

78% (1995)

57% (1971)

46% (1990)

53% (1970)

64% (2020)

53% (1976)

61% (1964)

53% (1977)

50% (1984)

65% (1956)

70% (1972)

79% (1996)

73% (1985)

68% (1969)

67% (1987)

71% (1987)