How do I display long list of client on a page using keynote

Question

In keynote each page has a fixed size. Just to impress people I am developing a page which will list around 40 clients.

I want the list of client names to appear one after another and the list will scroll down. Sort of like the reverse of a credits scroll at the end of a movie. How do I do that with Keynote?

For simplicity you can also imagine as having a single page that lists from 1 to 100 vertically.