Where can I find statistics on the most common professions in the US, Europe or Russia? with approximate percentages?

Question

Analytics

Where can I find statistics on the most common professions in the US, Europe or Russia? with approximate percentages?
I can't find what I need in search engines.

Answer 1

www.gks.ru
https://www.dol.gov/
www.census.gov

Answer 2

1. Where did the $arr variable come from?
2. When reading from a file, the variable will contain a string, not an array
3. array_push returns an int, not an array
Show the contents of the info.php file