There is another story in this blog post:

"There are 90 people in the photograph below. With the exception of a small number of outsourced assets, you’re looking at the entirety of the dev team across all disciplines. We've resisted the temptation to grow into a multi-studio team of hundreds, such as you often find behind games of similar scope to those we make."

I find it most astounding that Skyrim was made by a team of less than 100 people. It seems that these days it's not unheard of that hundreds or even more than 1,000 people work on a game. An example of the latter category is Grand Theft Auto IV.