Japanese naval budget 1921-1922 according to the Weekly Intelligence Summary (W.I.S.) No. 10 dated 12 March 1921

An item reported that the Japanese navy expended more in the current year than allowed by the Diet. In the naval estimates 1922 was on 8 March asked for 16.3 million yen on this account and further more a supplementary budget of 48 million for the same purpose. Totally 56.3 million.

Source

The National Archives, Kew Gardens, England CAB-24-121-21