Lucien glances at some figures before informing the away team that this is upsetting but probably still not worth focusing on unless the numbers keep rising past this threshold - probably they are based on relative progress, not absolute, so they should level off.
More importantly they need a better industrial base, ideally paired with widespread contraception. This planet isn't in immediate danger from the Borg but there's a tail risk of a Borg incursion breaching the front lines, or the Borg finding another wormhole, and if that happened in thirty years with this rate of population growth and inability to defend themselves or run it would be quite bad. Uh, thinking about that um.
Probably they should also push for more urbanization - the current setup makes it really hard to torch the major population centers in the event of there not being enough time for evacuations. Can't risk this many people getting assimilated.
The away team operatives are used to amaliens and so are not surprised when a few tears slide down Lucien's face as he talks. He doesn't get choked up or pause - he's used to this sort of conversation by now.