Why won't my Patricians advance?

I have clicked every house i can find and they are all full green for taxes and for needs. I've read numerous resources and almost everything points to getting everything in the green.

I'm so tired of this current game I need to finish it successfully!

Here is a screenshot of my citizens. How can i get my patricians to advance to nobles and end this!

I even have envoys on my main island to facilitate my Patrician advancement, but i'm still stuck.

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You don't have enough people. Only a certain percentage of your population can advance to the next stage, likely to ensure you don't leave all your industry looking for workers who think garbage collecting and making beer are beneath them.

The solution is simple: put down more houses. You could even build another entire district, if you want to play it safe. As you level up more of your population towards Patricians, it will allow them to move up to Nobles, and you'll win the level.