To provide further for the availability of indigent health care in a Class 2 municipality, there is levied and shall be collected as provided in this article a privilege assessment on the business activities of each provider of a PACE program with its principal place of business in a Class 2 municipality. The privilege assessment imposed by this article shall be in addition to all other taxes of any kind imposed by law and shall be at a rate of five percent of the net patient revenues of the organization.