> It looks like Germany's population grew by over 20 million just recently.

Uh, that'll be the fall of the Soviet Union adding ~16M East Germans.

https://en.wikipedia.org/wiki/German_reunification

> Some countries don't even have a census every year

You don't need a census to get a population count. Governments definitely keep records of births/deaths, as well as immigration. Your own link provides population numbers for every year from 1900 through 2018.

https://en.wikipedia.org/wiki/Demographics_of_Germany#Statis...

> Facts are so unpopular.

Indeed.

German population in 1998: 82,024,000.

German population in 2018: 83,000,000.

Germany Population 2019: 83,547,429

http://worldpopulationreview.com/countries/germany-populatio...

I don't doubt Germany has continued to take in refugees, but we're not comparing like-to-like here; they're different population estimates, as the 2018 number in your link differs from that in mine.

The point remains: Germany has almost the same population it had 20 years ago. Blaming internet troubles on rapid population expansion is clearly false.