Section 437(f) of the Pennsylvania Liquor Code establishes quotas for Malt Beverage Distributors (D) and Malt Beverage Importing Distributors (ID). One D or ID license is issued for every 30,000 residents, with a minimum of five available in each county. There are no exceptions. Act 591 of 1952 established the distributor license quota at 1 license for every 10,000 county inhabitants and a minimum of five per county. Act 445 of 1965 changed the quota to 1 license for every 15,000 county inhabitants; Act 160 of 1990 made it 1 license for every 30,000 county inhabitants.