The following are some charts taken from research done by the St. Louis Fed.
As always, click on any chart for a trip to the site from whence it came ..... probably.
The following charts were taken from research published by the New York Fed.
Interesting how it is that your "public four year colleges" have increased in cost so much more rapidly than both "private nonprofit" and "public two year colleges".
Oh yeah, I almost forgot. It's nearly impossible and for damn sure expensive to get student loans discharged via bankruptcy.