Have you checked here? http://piketty.pse.ens.fr/en/capital21c2

Not sure if that gets you what you are looking for.

Well, the three visualizations in the article all use Tableau Public, and you can download them yourself and play with the data.

Piketty's data for all countries is available here (does not include this latest batch yet): http://www.wid.world/

There is a link to it in the article: http://gabriel-zucman.eu/usdina/