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最权威的是，国家统计局 2020年出的行政划分代码： http://www.stats.gov.cn/tjsj/tjbz/tjyqhdmhcxhfdm/2020/index.html
所有年份查询: http://www.stats.gov.cn/tjsj/tjbz/tjyqhdmhcxhfdm/
