Thanks for posting the link. However, I would like to warn readers who look at it to be careful how they interpret that information. Firstly:
The AIP data is a "sample" of their members, not a sample of physicists. Are those physicists who dislike their job and are not happy with the way their career turned out as likely to be a member of the AIP as those for whom everything has gone smoothly? How well this sample actually reflects what physicists as a group make is completely unknown.
I would also disagree with the lumping of all physics disciplines into one area of "physics". It makes as much sense to ask what a physicist in a university makes as it does to ask what a businessman makes. A bookkeeper, vacuum salesman and CEO are all businessmen, and they have wildly varying salaries. The salaries at universities vary as well, and they largely do so by discipline, not by length of time they've stayed.
Finally, the question of whether there is money in physics is not answered by median incomes. It is answered by median lifetime incomes. People pay a hefty price in lost wages by going to extra school, and lifetime earnings are a reasonable way of seeing how well it pays off. I know many students who will make $65,000 a year. . . after 11 years of school, 8 years of postdoc, and several years at the bottom of the teaching pool. That is not the same financially as making $65k after 6 years of school.
For these reasons - and especially the last one - I do not believe the AIP actually answers the question asked in the OP. While I do not consider the AIP statistics "wrong" exactly, I believe they can be very misleading to almost anyone who casually looks at them.
Reader beware.