JAPAN - JANUARY 23:  A stack of 100 yen coins is arranged for a photograph in Tokyo, Japan, on Wednesday, Jan. 23, 2008. The yen fell to a two-month low against the New Zealand dollar after MBIA Inc. said it plans to split its bond insurance business, encouraging traders to buy higher-yielding assets funded with loans in Japan.  (Photo by Tomohiro Ohsumi/Bloomberg via Getty Images)