Special Drawing Right. The reserve currency, introduced by the International Monetary Fund (IMF) in 1970, was intended to replace gold and national currencies in settling international transactions. The IMF uses SDRs for book-keeping purposes and issues them to member countries. Their value is based on a basket of the US dollar (with a weight of 41.73%), the euro (30.93%), the Chinese renminbi (10.92%), the Japanese yen (8.33%), and the pound sterling (8.09%).
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