Attitudes towards Facebook as a brand in Germany 2013-2016

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 millions
2014: 8,156 respondents, projected to a population of 70.52 millions
2015: 7,009 respondents, projected to a population of 69.24 millions
2016: 7,026 respondents, projected to a population of 69.56 millions

This question was phrased by the source as follows: "Which of these brands or manufacturers do you know, even if it is just by name?"
"Just as one can find a person likeable or not, one can say the same of brands, this brand is likeable or not. Please tell me which of these brands you think are likeable."
"Of which of these brands would you say, they are high-quality, they provide a very good quality?"
(Original German question: "Welche von diesen Marken bzw. Herstellern sind Ihnen bekannt, wenn auch vielleicht nur dem Namen nach?"
"Genauso, wie man Menschen sympathisch oder unsympathisch finden kann, kann man auch von Marken sagen, diese Marke ist mir sympathisch oder unsympathisch. Bitte sagen Sie mir einmal, welche von diesen Marken Ihnen sympathisch sind."
"Bei welchen dieser Marken würden Sie sagen, die sind hochwertig, die bieten eine sehr gute Qualität?")