This link on IM$avvy gives a quick summary of the median wages grouped by age. Just by quick peek will let you know if you are among the top 50% of your age group or not…
If you get dismayed after checking, do note that if you are in the lower bound of the age group, you still have time on your side. However, if you are on the upper bound of the age group, then it might be due to being the “wrong” industry