We have a hospitality project pursuing LEED v4 O+M, which is located in European Union. To provide documentation for this credit, we have challenges. For example, the materials and products are all EU ecolabel since 2023. However, they were not under any standards in 2022. The question is about the credit language " At least 75%, by cost, of the total annual purchases of these products must meet at least one of the credit standards!" so the question is: When this annual period starts? begining of a calendar year? performance period of the credit? one year before LEED O+M submission ? 

I appreciate it if any one can guide us.