Are performer ids guaranteed to increment?

[flimzy]

Reason I ask: I'm looking for a way to detect new performers, without querying the entire list of performers. If the ids are known to increment, then I can sort by id.desc, and only paginate until I find a known id, saving a bunch of API calls.

But, there are many gaps in the ids, so I wonder if the ids are assigned in a pseudo-random order, which would render this strategy unusable.

Thanks.