I would have registered in CodeFights to get the data, if it had Pascal. They have dozens of languages but not Pascal, which is both functional, used, and a classic. How odd. Although Pascal is not in the top 10 of most used languages, I know it's in the top 20 (looked at it recently), if you believe in that kind of data. Good as a guide, bad to look at it as precise data due to the different weights and measures done for statistics.
Beep us when they add Pascal to CodeFights and I'm sure many will join for fun (although the site seems to advertise itself as a job opportunity thingy). It would be cool if from time to time a Pascal user would be among the best solvers in a challenge.