Only three developing countries - the Republic of Korea (4.27 per cent), Singapore (2.20 per cent) and China (2.02 per cent) - reached R&D intensity above the world average in 2014“ The indications are that R&D expenditure and numbers of researchers closely follow economic trends. The poorest countries thus continue to lag far behind the most advanced countries. It covers three types of activity: basic research, applied research and experimental development. Available at http://data.uis.unesco.org/ (accessed 21 March 2018).