People leave when it gets more expensive whether it be to cash out or that they cant afford it. The winners stay and the losers head to places like St George where the market is deteriorating by the day. Then prices equalize at some point and they come pouring back in. This is nothing new in SD. This place has so much inherently going for it that it will always be an aspirational place to live. If prices became more affordable the population would go crazy and in due time it will again. Lather rinse repeat
Ill work on a SG data update when I get the chance