Base: German-speaking population aged 14 years and older.
Information on total sample:
2017: 23,106 respondents, projected base of 70.09 million people
2018: 23,086 respondents, projected base of 70.45 million people
2019: 23,120 respondents, projected base of 70.60 million people
2020: 23,138 respondents, projected base of 70.63 million people
The figures refer to the following studies:
2017: VuMA 2018; 2018: VuMA 2019; 2019: VuMA 2020; 2020: VuMA 2021
You can find more information on the methodology of the study here.