Nothing in 5 U.S.C. 552 or this part requires that any agency or
component create a new record in order to respond to a request for
records. A component must, however, make reasonable efforts to search
for records that already exist in electronic form or format, except
when such efforts would significantly interfere with the operation of
the component's automated information systems. The component will
determine what constitutes a reasonable effort on a case-by-case basis.