contributions under the same or compatible license as the original. https://creativecommons.org/licenses/by-sa/3.0CC BY-SA 3.0 Creative Commons Attribution-Share...
proficiency Low proficiency Very low proficiency Other versions: English Proficiency Index by country as of 2014.png I, the copyright holder of this work...
org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Percentage of English speakers by country and dependency as of 2014 Wikimedia...
