(a) A majority of voters in a hospital district created under general or special law of which all or a majority of the territory is located in a county or counties each with a population of 75,000 or less may impose a sales and use tax to raise revenue if the imposition is authorized at an election under this subchapter.
(b) A district may not adopt a tax under this subchapter or increase the rate of the tax if as a result of the adoption or increase the combined rate of all sales and use taxes imposed by the district and other political subdivisions of this state having territory in the district would exceed two percent at any location in the district.