Since about 2015 there has been a growing number of Ukrainians working in the European Union, particularly Poland. Eurostat reported that 662,000 Ukrainians received EU residence permits in 2017, with 585,439 in Poland. The head of the National Security and Defense Council of Ukraine has estimated that up to 9 million Ukrainians work abroad for some part of the year, and 3.2 million have regular full-time work abroad with most not planning to return. World Bank statistics show that money remittances back to Ukraine have roughly doubled from 2015 to 2018, worth about 4% of GDP.