This section does not apply to a Class A license issued for use in an existing shopping center or in a proposed shopping center development for which a building permit has been issued that contains 200,000 or more square feet of commercial retail space. The Board may issue up to six Class A licenses in each election district in the county. Notwithstanding paragraph (1) of this subsection, the Board may issue more than six Class A licenses in an election district, provided that the total number of Class A licenses in any election district does not exceed one Class A license of any type for every 4,000 residents of the election district, as determined by the latest federal census.