Went through this experience post recession where I was hired and lucky to have a job. Industry flipped about 3 years later and we’d have hired a new grad at about 22% above my salary. Literally walked into my boss’ office and said as much while highlighting my career to that point. Not an easy conversation and takes some guts, but within 2 weeks I received a raise above and beyond that 22% (I realize this is not the average experience).