[mrjay42]

You can very probably obtain a much different result and most likely more accurate by doing this:

Looking at a few metrics should be enough for you to understand that this article from The Economist is some kind of "everything is going well"-centrist-propaganda.

Suggested metrics:

1. https://en.wikipedia.org/wiki/List_of_countries_by_income_in...

Based on the Gini Coefficient https://en.wikipedia.org/wiki/Gini_coefficient

2.

https://en.wikipedia.org/wiki/List_of_countries_by_Human_Dev...

Based on the HDI: https://en.wikipedia.org/wiki/Human_Development_Index

3.

And finally: https://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nomi...

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All of the above are criticizable indices, by themselves. However, if you take the time to superpose those statistical markers, you'll get a much better picture than whatever The Economist is trying to say in this article