Cartogram

http://www.dailymail.co.uk/news/article-439315/How-world-really-shapes-up.html

Cartograms are simplified data condensed into a visual representation on a map. These maps use lines, dots, and other symbols to represent different types of data. In the map above, it features the wealth of nations in 2002. The size of each country is a reflection of its wealth; the more wealthier countries are larger.