Acceptable inventory turns

Once upon a time, when companies tried to carry all the inventory they needed for a considerable period, often called, "just-in-case" inventory management.
four turns per year was considered good.

In the 21st century, with so many companies getting really good at the more modern inventory management system of making inventory available to customers "Just-in-Time," rather than just in case, it's not uncommon for businesses in some industries to achieve double that rate (eight turns per year) or more.