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When the Second Sino-Japanese war broke out in 1937, the total quantity of Chinese yuan in circulation (this figure includes both currency and demand deposits) was 3.6 billion yuan. By December of the year 1941, when the United States entered the war, the total supply of Chinese yuan in circulation had increased to 22.8 billion yuan. For the remainder of the Second Sino-Japanese war the numbers were: 1942, 50.8 billion yuan; 1943, 100.2 billion yuan; 1944, 275 billion yuan; and 1945, 1,506.6 billion yuan.