Comment by eftychis

And to amend a bit, to give the whole perspective: And one of the triggers started when around 2005 the FED started raising interest rates.

Which it had lowered more dramatically due to 9/11.

https://www.bankrate.com/banking/federal-reserve/history-of-...

Let that sync in, is my 2c.

(Extra:The FED interest rates takes 2 years to kick in to Adjustable Rate Mortgages which where the first to fall.)