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首先要搞清楚世界银行的国别收入水平分组代表着什么,又不代表什么。世界银行从1987年开始,人为划定了一系列人均国民收入门槛线,作为经济能力的分类标准:高收入(6000美元以上)、上中等收入(1941-6000美元)、下中等收入(481-1940美元)和低收入(480美元及以下)。此后,在该固定基数上,根据美国、英国、日本和欧元区平均通货膨胀率逐年动态调整。2012年,
First of all, we must find out what the World Bank group of country-level income represents and does not represent. Since 1987, the World Bank has artificially delineated a series of national income per capita income thresholds as a measure of economic capacity: high-income (over $ 6000), upper-middle income ($ 1941-6000), lower middle income (481- 1940 USD) and low income (480 USD and below). Since then, the average base on the fixed base, according to the United States, Britain, Japan and the euro area average annual inflation rate adjusted dynamically. 2012,