The first list includes 2017 data for members of the International Monetary Fund. The UN World Bank cites the IMF as the source for their data on Current Account Balance, and so is not included separately on this page. The second list includes only countries for which the CIA World Factbook lists 2015 estimates for both Current Account Balance and GDP.
List of countries by current account balance as a percentage of GDP
The IMF data are estimates updated for the April 2018 report, derived from 2017 data. The World Factbook data is as of February 2015.