Where can I get statistics on languages ​​in the browser depending on the country?

Question

Internationalization and localization

There was a question, what languages ​​are chosen for users of the USA, Great Britain, Canada, Australia and other countries where English will be the main one.
I want to show the "imperial" units for the first user login, but only for those who come from the USA. I don’t want to do it in PHP yet, I need to get out with Javascript.
Interestingly, the languages ​​in the browser, some of the English are set as en-us or en-gb, basically. Where can you see this?

Answer 1

Google Analytics
Canada: 10% CN , 45% EN , 45% FR
UK: 10% PL
AU: 10% CN

Answer 2

here around the world, look at the site, maybe by country there is
https://www.internetworldstats.com/stats7.htm