The system receives bibliographic references and full-text reports from member states and organizations represented by INIS Liaison Officers in each of those entities. The IAEA supplements these contributions by acquiring bibliographic references from publishers and repositories in its scope. In its first year of operation, some 3,944 bibliographic references were provided, 644 also containing a full-text non-conventional literature, also called grey literature. By the end of 2022, the system had grown to 4,654,908 bibliographic references, with 431,670 of those full-text.