Kepler
Cornell Big Red
The thing we should be worried about is underemployment. People with degrees working retail or gig jobs. The amount of people who are independent contractors. People who can't even be classified as living paycheck to paycheck. People who (as DGF said) have exhausted their unemployment resources or no longer are classified as "part of the workforce".
Median income as a ratio of median debt. I wonder how that graphs since The Great Betrayal in 1980? And then back farther all the way to the beginning of record keeping.
I have a feeling it's steady rise from 1932 through 1968, stagnation from 1968 to 1980, and then off the cliff after 1980.