In 2011 CentERdata started the Theme questionnaire. The questionnaire is repeated regularly and each time consists of a number of questions about various themes that relate to residing in the Netherlands. The themes are repeated or other themes may be included. Examples of themes addressed are:
· Food
· Climate
· People
· Nature
· Politics
· Language
· Freedom
· Work
· Domestic living
The various measurements serve to compile a comprehensive picture of how immigrants experience living in the Netherlands.