The articles reference studies and books which have the data. See work by Ford, Autor, Acemoglu, Autor, Brynjolfsson. If you want to read just one thing which has plenty of data, read the book &quot;Race against the machine&quot; - they talk all about the studies used to come to their conclusions:<p><a href="http:&#x2F;&#x2F;raceagainstthemachine.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;raceagainstthemachine.com&#x2F;</a>