The same is true ‘across the pond,’ in the United States. For example, NBC reports that according to the data that Census collected 1 in 4 Californians between 25 and 33 years of age are still living with their mother and father. Things are no different in Australia, where 43 percent of 20 to 24-year olds haven’t moved out yet, compared to 36 percent back in 1981.
There are serious reasons for this phenomenon, and it’s not just the ‘youngsters’ who have to shoulder the blame. The fact is, financial stability and property affordability both have a lot to do with the decision whether to stay with mom and dad or to fly out of the nest.
https://en.wikipedia.org/wiki/European_Union
my friend lived with his GF in his mom house, so he was "live with a parents" category, while his GF was "moved out from parents" category. of course she paid nothing.