I need help with a project at work...

I have created a spreadsheet as part of a project at work.

It's now that I have completed the sheet, I have stumbled across an issue...

Could anyone tell me how to get a different number in the header(for the
worksheet reference) on each print out?

For Example; If I printed out 50 copies of this spreadsheet, the first copy
would have the reference 001, the second copy would have 002...third copy
003... etc

I'm aware that if I just did it as a normal header it I would have loads of
copies of ref: 001

Please help....! It's driving me insane as I'm sure there is a way to do
this but can't figure it out!