Finding out Latest Entry Date of a Record for nearly 20K Data Extension

We have a list of nearly 20k DE's that was created over the last 8-9 years. We would like to keep only those DE's in our SFMC Account where records got added in the past one year and anything beyond that we would like to delete those De's

Any quick way to find out the latest entry of a record for all those DE' s since manually verifying it will be quite time consuming?

#SFMC #Data Management #API