We collaborate with the parks often on a couple of annual cache series. The park has asked for some metrics on how many cachers have been to the park over a period of time. Total number of finds is easy, but that is skewed because the totals include Cacher A 50+ times (one for each find). Manual analysis of the caches is a herculean task. Is there a way to see how many unique finders of a (bookmarked) series there are?