Frequency of posting comments on Twitter in Germany 2013-2015

Information on base:
German-speaking population age 14 and over in private households, at main residence in the Federal Republic of Germany.

Information on random sample:
2013: 8,702 respondents, projected to a population of 70.33 million
2014: 8,156 respondents, projected to a population of 70.52 million
2015: 7,009 respondents, projected to a population of 69.24 millions

Information on target group "German-speaking internet users":
2013: projected to 52.92 million persons
2014: projected to 53.54 million persons
2015: projected to 54.16 million persons

This question was phrased by the source as follows: "On these cards you can see a number of different internet activities, things one can do in the internet. Please organize the cards on this sheet depending on how often you engage in these activities on the internet: tweeting, posting comments on Twitter." (original German question: "Hier auf den Karten steht Verschiedenes, wie man selbst im Internet aktiv werden kann, was man dort machen kann. Bitte verteilen Sie die Karten entsprechend auf das Blatt, je nachdem, wie häufig Sie das im Internet machen: Twittern, Beiträge auf Twitter schreiben.")