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So, plus 10% would mean what? There is a 10% net-migration of the countries population towards the US... per what? Month? Decade? Minute? I wished more graphs where self-explanatory . This one isnt.
If someone has the answer to what this is actually supposed to mean, would be cool if it got posted.
It is literally written, right there, in the subheading:
Foreign Diaspora in the United States Less US Diaspora in Foreign Country, as a Share of Foreign Country Population
Per what and when is not literally written.
Read it again. There's not a "per when" because it's measuring the Diasporas, which would just be "per all time, that are still alive"
Diaspora just means dispersed people. It doesn't convey any time frame in and of itself
Yes, exactly, hence "per all time, that are still alive" because it's measuring the current number of American-born residents of each country, compared to the residents from said country in America.
As of what year?
Edit: id also like to point out there are diaspora maps for time frames, so just posting a map with that word is as best trying to misleading or make a statement. Otherwise, that information would be freely available. That's how data works.
That's an entirely different thing than "per unit of time". It's a valid question, turns out there isn't an answer, but some very basic searching linked me to the original map as released: http://cf.datawrapper.de/dduui/2/
To your edit, sure, there are diaspora maps for timeframes. Those are called immigration/emigration maps, because the acts of which grow or shrink a diaspora.
To be fair, I originally did say per what and when. So the when has always been an unanswered question. I've not changed my original question at all, because the original image doesn't answer them
He’s asking a valid question. There are no time references anywhere on the chart. Surely the numbers change over time, so knowing when the map was created is perfectly relevant.