Federal Reserve Chair Jerome Powell said the central bank could begin reducing its monthly bond purchases this year, though it won’t be in a hurry to begin raising interest rates thereafter.The economy has now met the test of “substantial further progress” toward the Fed’s inflation objective that Powell and his colleagues said would be a precondition for tapering the bond purchases, while the labor market has also made “clear progress,” the Fed chief said Friday in the prepared text of a virtual speech at the Kansas City Fed’s annual Jackson Hole symposium.