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4. Cabinet Office. http://www5.cao.go.jp/keizai3/getsurei-e/2017oct.html and http://www.esri.cao.go.jp/en/sna/data/sokuhou/files/2017/qe172_2/gdemenuea.html .
5. Council on Foreign Relations. https://www.cfr.org/backgrounder/abenomics-and-japanese-economy and https://www.cfr.org/event/overcoming-deflation-bank-japans-challenge .