CEO pay relative to median employee pay has soared since the 1970s. That is, a CEO may be paid $10,000,000 vs the median employee at $70,000 (arbitrary numbers), where before 1970 the numbers may have been $150,000 and $20,000
Using only one set of numbers can be deceiving though. For instance, through mergers and acquisitions, there may be One CEO where there were previously 10. So you might be able to see this by comparing Total Executive Pay - ie the whole C-suite to Total Non-Executive Pay.
Also, many companies have become more efficient as measured in revenue per employee over time, so another good set of numbers might be Total Executive Pay vs Gross Revenue.
How does Executive Pay look in these contexts?
I'm sure someone has done the work, but I have not had luck googling it, and I definitely don't trust a LLM to get this one right.