From the text:
"... and require firms to initially show GIPS-compliant history for a minimum of five
(5) years or since inception of the FIRM or COMPOSITE if in existence
less than 5 years. After presenting at least 5 years of compliant
history, the FIRM MUST add annual performance each year going
forward up to ten (10) years, at a minimum."
It may be easy, but from the question we don't know at what point this 10 year old composite starting claiming compliance with the GIPS. If it was ten years ago, then after the minimum 5 years, this composite, in order to claim GIPS compliance, needed to add a year for each of the additional 5 years in existence, at a minimum.