Do you circulate older serials?

I manage our print serials and Im trying to determine an appropriate cutoff date for older serials to not circulate. Part of the reason for needing to do this is that I can't easily replace some of these materials when they get lost and some aren't available for us digitally. I haven't found much guidance on if other libraries do this or what there criteria is to make something non-circulating. Im torn between wanting it so all serials within a certain date range are non-circulating or deciding case by case, with the big criteria being if we personally have it available online. Any suggestions would be great.