By Sinéad Carew NEW YORK (Reuters) – The U.S. dollar index fell from 20-year highs and Wall Street equities sold off on Friday with the latest economic data and Amazon.com’s disappointing quarterly report and outlook keeping the spotlight on surging inflation. In U.S. Treasuries the benchmark 10-year yields capped off their biggest monthly gain since December 2009 by rising near their highest levels of the year after economic data. Equities were under pressure after data showed that monthly inflation surged by the most since 2005 while U.S. consumer spending increased more than expected in Mar…