Private Sector Development in the MINA Region; OECD (2012d), Untapped Skills: Realising the Potential of Immtcrant Students. Information on the number of international students (that is, students who obtained prior education abroad) is not available for all OECD countries, but the available evidence suggests a strong increase over the past decade. To make better use of this important source of skills, several OECD countries have eased their immigration policies to allow international students to work during their studies and encourage them to remain after their studies to work (Box 1.27), The overal I percentage of those who remain in the host country after their studies varies/0 averaging 25% in 2008-09 among international students who did not renew their student permits; it is above 25% in Australia, Canada, the Czech Republic, France, Germany and the Netherlands. Since not much is known about the career paths and mobility of this high-skilled group, the OECD, UNESCO and Eurostat are working together in the Careers of Doctorate Holders project to provide statistics for this specific group.