Depends on which way you cut the data, looking at occupations, time period, and geographic location. I've looked and have found data and reports suggesting they're flat (keeping up with inflation) or slightly outpacing inflation. Some specific sectors and skills have seen significant growth.

The number of people employed in IT services as a whole as increased which has likely helped keep wages more stable. It's still a good career as far as salaries go.

One thing I've found that makes digging deeper challenging is the preponderance of titles and roles. Title inflation could disguise wage growth to some degree.