Historical chart of Gulf Cooperation Council GDP per capita (1980-2010)

Reference 1: GDP per capita (as% of USA's GDP per capita).

Reference 2: 1980, 1985, 1990, 1995, 2000, 2005 and 2010.

Source: http://en.wikipedia.org/wiki/Cooperation_Council_for_the_Arab_States_of_the_Gulf