| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 30 | 62 | 440 | 1335 | 1004 | 47 | |
| 2025 | 1 | 3 | 24 | 24 | 11 | - | 63 |
| 2024 | 5 | 41 | 24 | 208 | 134 | 1 | 413 |
| 2023 | 1 | 4 | 60 | 284 | 180 | 10 | 539 |
| 2022 | 2 | 6 | 54 | 229 | 177 | 4 | 472 |
| 2021 | 3 | 3 | 58 | 244 | 141 | 10 | 459 |
| 2020 | 9 | 5 | 109 | 203 | 188 | 8 | 522 |
| 2019 | 9 | - | 111 | 141 | 170 | 14 | 445 |
| not yet published | - | - | - | 2 | 3 | - | 5 |