It 's too early .
I do n't have enough time to look up some studies , but something like an extra 10 % per year output is needed to break even , so to speak , from the age of 30 on .
It 's too early and I do n't have enough time to look up some studies , but something like an extra 10 % per year output is needed to break even , so to speak , from the age of 30 on .