I get between about a pint and a half of syrup from each taphole over a 20 year period. Course most of my trees are small and scraggly, perched on a steep ledge on a northeast slope with health spouts on about half of them (and no vacuum).

Also, I'm pretty much guessing how many taps I have. I've tried to count then but I can't seem to get past 60 or 70.