UN Literacy Data (CLDR BRS)

1. Goto https://data.un.org/Data.aspx?d=POP&f=tableCode:31
2. On the left tab under filters:
   • under Area choose Total
   • under Sex choose Both Sexes
3. Click the Download button and choose XML
4. Save the resultant XML file as tools/cldr-code/src/main/resources/org/unicode/cldr/util/data/external/un_literacy.xml
5. Now you can run AddPopulationData

Note: If the format changes, you'll have to modify the AddPopulationData.loadUnLiteracy() method.