There are many ways through which data is collected from respondents and different forms of data sources at national level. This includes data through censuses, surveys, and administrative sources or via mediums such electronic data reporting and Internet reporting which are not directly related to specific censuses or surveys.

• 4.3.1 Population and Housing Censuses
  
• 4.3.2 Business and Agricultural Census and Registers
  
• 4.3.3 Household Surveys
  
• 4.3.4 Business and Agricultural Surveys
  
• 4.3.5 Other Administrative Sources