try being a non-exit relay for a few days?
that would get you some more data at least
there is also a phenomenon in the tor network where, after a few days, we decide you're stable enough to be used as the first hop (i.e. you get the Guard flag)
then clients avoid you for hops other than the first hop (or the last, if you're an exit relay too),
but since clients pick guards and stick with them for a while, and not many clients have picked you yet since you just got the Guard flag,
there is an expected dip in traffic right after you get the guard flag