GIPS Question

In my Schweser notes, it states "…include all fee paying discretionary portfolios in composites for a minimum of 5 years or since firm or composite inception. After presenting five years of compliant data, the firm must add annual performance each year goign forward up to a minimum of 10 years. I dont get this…is it saying you have to have at least 5 years(or since inception) but after that they expect you to keep adding on information until you reach 10 years and that, lets assume you have been in business for 11 years, that you MUST have the last 10 years? The wording is confusing…,858288