JAPAN - FEBRUARY 28:  People use automatic teller machines (ATM) at a Japan Post Bank Co. branch in Tokyo, Japan, on Thursday, Feb. 28, 2008. Japan Post Bank Co., the world's biggest-lender by assets, said it plans to increase investments in corporate bonds, mortgage-backed securities and syndicated loans from the fiscal year starting on April 1.  (Photo by Hitoshi Katanoda/Bloomberg via Getty Images)