 Even though the western system had kept some number ranges free specifically for later integration of the East should reunification come, it was decided that the time was right to create an entirely new system in the 1990s, in which larger towns and cities would be divided into multiple postal code areas (the old system had made inconsistent use of additional numbers after the city's name for this), and companies receiving a lot of mail (such as mail-order businesses) could get a private code assigned.This resulted in a system where one could no longer identify the size of the city by the number of trailing zeros in its postal code (such as 2000 for Hamburg or 8000 for Munich).Post office boxes are arranged in racks containing several dozens of them.