The way they do bear counts around here is sort of a bull#### deal. Let's say they dart 10 bears out of the population, and tag them. Then they sally forth and dart another 10, then another 10. They add up the number of times that the same bears are darted, do a mathematical calculation, and end up with a wild ass guess as to what the population is. I suppose some statistician can argue that it's accurate means of measuring a population, but I don't buy it - there's too many variables which effect the data. Perhaps it would work in the mountains where bears are more territorial.
Anyhow lets say that in Alberta there are 1000 grizzlies. By my figuring, that means that an annual harvest of 333 bears (30%) will keep the birth rate high, and the population stable. Of coarse you would have to factor in natural mortality, and Alberta bears being harvested in B.C., so perhaps Alberta hunters could harvest 200. If one in 4 hunters was successful that means you could sell 800 licences.