excessive number of 'ntuser*.dat files in limited user's folder

Greetings from the GREAT Country of TEXAS,

Have discovered many, 9 - 24, 'ntuser.dat files in the limited user's folder from 2012 up to 2015.  Could all but the latest files be DELTED to keep excessive files from taking up space and not being of any value?

Also could any excess files, such as above, be removed from any USER's folder as well?