历年人民币兑美元平均汇率
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年份人民币兑美元汇率19948.700019958.446219968.317419978.298419988.279619998.278920008.279520018.277420028.276620038.277020048.276720058.276520068.070220077.807320087.299620096.836720106.828120116.621520126.300120136.289720146.142820156.228420166.6423