(1) Includes term and whole life The following table details the contributions to Aflac Japan's new annualized premium sales by agency type for the years ended December 31. At December 31, 2021, Aflac Japan had agreements to sell its products at 360 banks, approximately 90% of the total number of banks in Japan. Strategic Alliance with Japan Post Holdings Aflac Japan Investments See the Investments section of this MD&A for further discussion of these investment programs, and see Notes 1, 3 and 4 of the Notes to the Consolidated Financial Statements for more information regarding loans and loan receivables. The following table presents the results of Aflac Japan's investment yields for the years ended and as of December 31. Portfolio book yield, including U.S. dollar-denominated investments, end of period (1) 2.60 % 2.59 % The decrease in the Aflac Japan new money yield in 2021 was primarily due to lower yields on floating rate asset classes.