I think you’re right, the per capita data we pulled must be different. I’m not use to looking at this type of data so it wouldn’t surprise me if I did something silly. I attached the excel file with the data in the original post. Also here is where I got the data from.
That’s a good point that the per capita income you used tracks well with rent. I’m curious though on if incomes really have increased ~17% more than CPI since 1987… I guess that doesn’t sound unreasonable.