The two links below include publications on worldwide economic and demographic trends.
I have already linked to one of the Goldman publications.
Also, the IMF has tons of interesting data, research papers and videos. However, The design of the whole website is not user friendly. But if you are patient you might find something like this. (A summary of the international financial system from 1871 to 1999)
(IMF: World economic outlook)
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(Goldman Sachs research insights)
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