Notation; certification and registration fee

At the time of such certification and registration such county treasurer shall thereupon make a notation in the proper place in the book in his or her office which shows the original registration of such secured debt, to the effect that the same has been refunded and that such refunded secured debt has been registered by him or her. The county treasurer shall charge and collect a certification and registration fee of fifty cents for every such refunded secured debt so certified and registered.