You don’t need 200 text layers… you can animate the text source.
Anyway, even though I’m sure there’s an automated way to count markers(sadly I don’t know one), any counter style animations usualy lack the proper manual kerning some fonts require. And that bothers me way more then typing 200 numbers. And after all, once you get it marked it should not take you much time to type the text changes.
And I’m betting it would take you more time to find and set out a different way to do it then to type it.