For reference: http://www.flickr.com/photos/yourusernamehere/stats/ should provide you with what you're looking for (although it may be a paid feature, I am not sure as I have been paying for flickr for years now...)
Stats are only available for (new and old) paying members
That's a Pro feature. You couldn't get stats on the free plan. And it seems, you can't get stats on their new replacement plans either. So far it looks like if you want stats, hope you're grandfathered in as a Pro user and keep on renewing.