I found this interesting picture:

Nicce, very interesting - but the totally wrong colours are very irritating.
It would have been clearer, if the brand-typical colours would have been chosen.

Well the one I can check they have wrong, in Holland the VW Polo outsold the Peugeot 107 in 2010 and in 2011 so far. Before that it was the Golf.

http://www.autoweek.nl/verkoopcijfers.php?verkoopjaar=2010

Have one little things wrong in this photo, the best selling car in Brazil is the VW Gol and not Golf

As reported by Max Warburton of London-based Bernstein Research, the most lucrative automobiles of modern periods jump out for a number of factors. The greatest successes can help an automaker ride the wave in boom periods and stay alive during bust occasions. Ford F Series is undeniably the star since 1990. For the past years, it really brought assurance on our safety as well as on how it would appear attractive among all the cars out there. You can go to http://www.cardealexpert.com/news-information/auto-news/most-profitable-vehicles/ for the full article.

For Argentina are totally wrong. Gol (pity, not the Golf) and the rubbish Corsa [B] are the most sold cars in the last years.
Anyway, in some terms, are interesting the picture.