9.5 Research and development expenditure as a proportion of GDP
9.5.1 Research and development expenditure as a proportion of GDP
Research and experimental development (R&D) expenditure as a proportion of Gross Domestic Product (GDP) is the amount of Research and experimental development (R&D) expenditure divided by the total output of the economy.;
https://unstats.un.org/sdgs/metadata/files/Metadata-09-05-01.pdf;