gdp by language - SERP Analysis

https://www.reddit.com/r/languagelearning/comments/11xt73g/world_languages_by_gdp_2023_edition/

http://www.kailchan.ca/wp-content/uploads/2016/12/Kai-Chan_Power-Language-Index-full-report_2016_v2.pdf

https://www.facebook.com/babbel.languages/posts/these-languages-are-valuable-due-to-their-widespread-use-and-economic-impact-mak/1249138356657368/

https://list.fandom.com/wiki/List_of_official_languages_by_GDP_per_capita

http://www.unicode.org/notes/tn13/

https://www.streetsmartlanguagelearning.com/2008/12/roughly-top-20-languages-by-gdp.html

https://www.quora.com/Is-there-a-list-of-languages-by-size-of-GDP-each-generates

https://enterpriseblog.rosettastone.com/top-languages-for-international-business/