"use" has a very wide definition. so first we have to set the criteria for what we consider usage and then by how much.
for example is just making transactions from exchange to wallet (back and forth) a usage? or is using the coins to actually buy a physical item (not even digital) only from a physical store a usage? i would say somewhere in between.

and as for how much, it has to be enough that you can bother to count and it has to last for a while not just be some random usage in some random online store for once and no more.

for example Dogecoin has some websites you can buy some small games from but i don't think we can consider such things as usage.
litecoin has more than Dogecoin by a lot but nowhere near as much as bitcoin. but i think we can consider than usage.

there are other altcoins too which have tried to do different things and get some real merchant adoption like the incentive that Byteball has put forth for merchants to adopt it. they need more work to enter my standards.