This kind of proves Northpin's point correct. 34 million in just 2 hours for two Exobiology species on one planet. It can take far less than 2 hours to scan 2 species on one planet too. Probably 10 to 15 minutes depending on what they are.yes, I fell it is ok now. Spent 2 hours on 1 planet for 2 species. Got 34 mil total about including bonus.
For all who thinks otherwise - it was 17 mil / hr. Just jumping straight and scan or bulk trade would do more.
So it could be bigger even if we want "balance". But it is fine as is to keep carrier in void forever.
It can take longer than 2 hours to find Systems that will get you more than 34 million in one trip.