Again this is mainly driven by migrants from the Asia and Oceania region and the between OECD countries, though the number of highly-educated women doubled among migrants from sub-Saharan Africa, Asia and Oceania and non-OECD European countries. Central Asia, Nepal, Mongolia, Saudi Arabia, Paraguay, Afghanistan and Lithuania also saw enormous growth - over 250% - in the number of highly-educated migrant women who emigrated to the OECD between 2000-01 and 2010-11 (ibid.). Development and changing economic structures in developed and developing countries have led to an increase in female educational attainment.