Total number of researchers divided by the total population multiplied by 1 million. Researchers are professionals engaged in the conceptualization or creation of new knowledge, products, processes, methods and systems, and in the planning and management of R&D projects. Postgraduate students at doctoral level (ISCED level 6) who are engaged in R&D are considered researchers. Full-time equivalents (FTE) represent one person-year; e.g., someone working 30% on R&D is considered as 0.3 FTE.