"...stateless persons are divided into six groups under the strategy and they are supposed to be covered by the survey and assigned with the ID numbers begun with ?0”. They include Group 1 those migrants in Thailand who have not been surveyed yet, but are related to those who have been registered as belonging to minority groups, 150,113 of them; Group 2 students in educational institutes, 66,937 of them; Group 3 rootless persons, 3,553 of them; Group 4those who have made great contribution to the nation, 23 of them; Group 5 migrant workers and Group 6 other aliens who have not been surveyed (As of 22 December 2009, Bureau of Registration Administration, Ministry of Interior)..."