Affordable housing isn't a US centric problem, I think that it is fair to say that it is still a big concern for many families across the world. If you look at

Affordable housing isn't a US centric problem, I think that it is fair to say that it is still a big concern for many families across the world. If you look at what % people are paying for housing vs. other stuff, I imagine a pretty clear trend over the last 50-80 years would start to show.