The global population is around 6.2 billion with a total global wealth of around US$125 trillion (£63 trillion) according to the largest study yet of wealth distribution from the World Institute for Development Economics Research of the United Nations. However, the richest 1% of adults in the world own 40% of the world’s wealth, and about half the world’s popualtion live on less than US$2 a day (£1 a day) according to World Bank estimates. The top five richest nations in terms of GDP are United States, Japan, Germany, China, and United Kingdom respectively. The five poorest nations in terms of GDP are: Tonga, Palau, Marshall Islands, São Tomé and Principe, Kiribati. There are almost 1000 billionaires in the world.
