Lucky for you I have a spreadsheet indicating exactly that from when I was trying to figure out the number of people sharing a bus. Most of my numbers came from the info pages on allears.net
This does not include DVC, but it does include Swan/Dolphin (though I guess that explains some of my confusion): 24,091
I do not know how recently that has been updated - and now you have AoA and Bay Lake Tower a few years ago.
If you want to get particular, he has the # number of rooms for each resort on his site (including AoA I noticed) - you could go to each one's page and add them up!
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