| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 24 | 60 | 423 | 1314 | 998 | 49 | |
| 2025 | - | 1 | 19 | 20 | 10 | 1 | 51 |
| 2024 | - | 41 | 25 | 206 | 133 | - | 405 |
| 2023 | 1 | 4 | 56 | 282 | 178 | 9 | 530 |
| 2022 | 2 | 6 | 50 | 223 | 177 | 4 | 462 |
| 2021 | 3 | 3 | 57 | 241 | 141 | 11 | 456 |
| 2020 | 9 | 5 | 108 | 201 | 186 | 9 | 518 |
| 2019 | 9 | - | 108 | 139 | 170 | 15 | 441 |
| not yet published | - | - | - | 2 | 3 | - | 5 |