Report Help

Hey i am new to Navision with almost no experience. i am working in Navision 2009 rtc and i was wondering if it were possible to get a report that would show me all movment from stock in the last year organised by individual month and customers. The reason i ask is so our sales personnel can get an average idea of stock movement for reordering. Is there already a report in navision that i may be missing that will already do this for me? or do i need to create a new report?