These will be the 21 most powerful economies in 2030

Monday 23 October 2017 12:38 BST

A woman uses her mobile phone before a share prices board in Tokyo on May 7, 2014. (YOSHIKAZU TSUNO/AFP/Getty Images)

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Emerging markets will start to dominate rankings of the world's top economies by 2030, according to a report published earlier this year.

The report, published by PricewaterhouseCoopers, finds that emerging markets such as India and Brazil will increasingly challenge the economic dominance of the USA and China, while others slip behind.

The report ranks countries by their projected global gross domestic product by purchasing power parity (PPP). PPP is a model which describes the purchasing power, and therefore value, of a given currency.

See which countries made the list:

All numbers cited in the slides are in US dollars and at constant values (for reference, the US's current PPP is $18.569 trillion)

21. Nigeria — $1.794 trillion