Denmark is being the top country by researchers in R&D in the world. As of 2014, researchers in R&D in Denmark was 7,198 per million people. The top 5 countries also includes Finland, Republic of Korea, Sweden, and Singapore.
Researchers in R&D are professionals engaged in the conception or creation of new knowledge, products, processes, methods, or systems and in the management of the projects concerned. Postgraduate PhD students (ISCED97 level 6) engaged in R&D are included.