Each country's states have been ranked and grouped according to their per capita GDP (or NSDP: net state domestic product). Population weights have been used to group states. Data for India refers to all states except Arunachal Pradesh for FY17. Data excludes Union Territories of Delhi, Puducherry and other. Brazil data is for 1997-2008 average, South Africa is for 2016-17 and US data is for 2012.