I need to have a design created

Hi I need a design created in a way that every time I print it, it will automatically number it self on each print, basically I need this design printed 5000 times and I want it to be numbered from: No. 00001 to No. 05000 and I also want to be able to make changes on the desing. the design is very simple I have created it my self allready, but the only thing I don't know how to do, is the numbering. So please help me to solve this issue. I can send you the design if you want and then you can just do want ever you need to do to have it automatically do the numbering.