In 2020, United States and China would remain the largest economy in nominal and PPP, respectively. Tuvalu would be the world's smallest economy in both methods. In exchange rates methods, Largest economy United States represents a quarter share of the global economy, while smallest economy Tuvalu contributes only 0.00005 percent. In PPP, biggest economy China shares almost one-fifth of world and lowest ranked Tuvalu shares 0.00003 percent.

In nominal data, China is forecast to become $15 trillion economy in 2020. 16 economies would have gdp above $1 trillion and 65 would have above $100 billion. Kenya, Ethiopia and Puerto Rico is projected to cross $100 in 2020.

Asian economies will account for over 50% of total expansion in world gdp (nominal) in 2020 as China (1st), India (3rd), Japan (4th) and Indonesia (6th) are within six leading contributers. North American and European economies will share almost 26% and 16% in total increment. United States would be 2nd and Germany would be 5th highest contributers. Guyana (+10) and Uzbekistan (+7) would climb most in ranking while Venezuela (-10) and Yemen (-10) would lose most.