During the 1978 - 1979 school year, it cost the modern equivalent of $17,680 per year to attend a private college and $8,250 per year to attend a public college. By the 2008 - 2009 school year those costs had grown to $38,720 at private colleges and $16,460 at public colleges. Today, those costs are closer to $48,510 and $21,370, respectively. That means costs increased by roughly 25.3% at private colleges and about 29.8% at public colleges.
https://www.cnbc.com/2019/12/13/cost-of-college-increased-by-more-than-25percent-in-the-last-10-years.html
