| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 24 | 61 | 415 | 1314 | 999 | 45 | |
| 2025 | - | 1 | 15 | 20 | 10 | - | 46 |
| 2024 | - | 41 | 25 | 206 | 133 | - | 405 |
| 2023 | 1 | 4 | 51 | 282 | 179 | 9 | 526 |
| 2022 | 2 | 6 | 50 | 223 | 177 | 4 | 462 |
| 2021 | 3 | 4 | 57 | 240 | 141 | 10 | 455 |
| 2020 | 9 | 5 | 108 | 202 | 186 | 8 | 518 |
| 2019 | 9 | - | 109 | 139 | 170 | 14 | 441 |
| not yet published | - | - | - | 2 | 3 | - | 5 |