I believe the page views can get even lower for some, but 20 hubs should give you much more than 15 views. It is a matter of optimizing your writings with appropriate keywords and of course giving yourself time. Your target should be Google and other search engine traffic.
It is also vital to note that a well optimized hub can register in Google search in less than 24 hours. So keep tweaking your work here and there and you should see page views soaring. Good luck.