Greek postal codes database

I’m doing a project were I need to have access to all the Greek postal codes. I couldn’t find them anywhere on the Internet so by personal labor, sweat, and years of hard work I compiled my own complete database of ZIP/postal codes in Greece.
After doing all that I thought what if somebody else needs this information on the future, so here I release the database under the following license:

“You may use the database for anything you want, even if you earn money from it. The only thing you must do is mention my name and website in any place/program where you use this database, directly or indirectly.”