Qatar has become the world's richest country per capita measured by the value of its built environment according to the latest Global Built Asset Wealth Index published by Arcadis. Qatar has become a global leader, toppling Singapore as the most asset rich country per capita, with built assets of US$198,000 for every citizen. The index, which was compiled for Arcadis by the Centre for Economics and Business Research (Cebr), calculates the value of all the buildings and infrastructure that contribute to economic productivity in 32 countries, which collectively make up 87% of global GDP. Total built asset wealth globally now stands at an estimated US$218 trillion, which is the equivalent to US$30,700 per person alive today.