Those changes are about the same for any window of the same time length for all of recent US history. St. Louis FRED has data and papers on this. One of the be

Those changes are about the same for any window of the same time length for all of recent US history. St. Louis FRED has data and papers on this. One of the best studies on intergenerational mobility in the US, using all IRS records (not sure how hard they had to work to get those) shows that mobility in the US has been fairly constant for 50+ years. [1] http://www.equality-of-opportunity.org/assets/documents/mobility_trends.pdf http://www.equality-of-opportunity.org/assets/documents/mobi...