That's the current percentage of professionals, which is likely to increase. It doesn't include many "programmers" whose occupation is listed under engineering or finance or management or security, or anyone who does it as a hobby instead of an occupation.

And why do you expect the students and retirees who constitute the non-working half of the population to have a different long-term composition?

That's self-reported, current occupation [0] collected by BLS.

[0] http://www.bls.gov/cps/cpsaat11b.htm

Please explain how that contradicts anything in the post you responded to.

Please explain where I must contradict the parent post.

Then thank you for agreeing with me?

It just seems like, if someone is being paid to program, as in your example, the BLS would count them as such.