Disclaimer: The following are merely personal observations of someone who plays a rogue in Denver. No idea about actual numbers.
I wouldn't call it an even spread. Scout, Rogue, and Adept tend to be a bit under-represented vs Fighter, Templar, and Scholar as far as I can tell. Maybe not Scout? Those can be hard to tell from the Fighters and Rogues sometimes, so who knows on that one. That said, I can only think of hearing about one time over the past 2 years when the lack of a Rogue/Scout/Adept has been to the detriment of an adventuring group. There is usually more than one way around most obstacles if you're clever or resourceful. Also, it's good to remember that every skill is accessible to every class. You don't need to be a rogue to pick locks and disarm traps, for example. I'd say play the class that most interests you and fits with the character you're developing, and if during your adventures you see an area of interest that's lacking among others you can just spend a little build to fill that niche.
Feel free to send me a private message if you have more questions, about rogues or anything else.
