bn:00331214n
Noun Concept
JA
米国の所得格差  アメリカ合衆国における所得不平等  アメリカ合衆国内の所得格差  収入
EN
Income inequality has fluctuated considerably in the United States since measurements began around 1915, moving in an arc between peaks in the 1920s and 2000s, with a 30-year period of relatively lower inequality between 1950 and 1980. Wikipedia
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