This publication includes business R and D data in ISIC Rev. 4 for 28 OECD member economies and four non-member economies. Data for the remaining countries: Chile, Greece, Iceland, Ireland, Luxembourg, Russian Federation and South Africa are currently only available according to the previous classification, ISIC Rev. 3 and are not included in this publication. The data for these countries will become available in the coming months in ISIC Rev. 4.