| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 25 | 53 | 434 | 1275 | 966 | 46 | |
| 2025 | 1 | - | 13 | 12 | 4 | - | 30 |
| 2024 | - | 33 | 32 | 194 | 117 | - | 376 |
| 2023 | 1 | 5 | 53 | 276 | 175 | 9 | 519 |
| 2022 | 2 | 6 | 51 | 219 | 175 | 4 | 457 |
| 2021 | 3 | 4 | 60 | 235 | 139 | 11 | 452 |
| 2020 | 9 | 5 | 111 | 201 | 185 | 8 | 519 |
| 2019 | 9 | - | 114 | 136 | 168 | 14 | 441 |
| not yet published | - | - | - | 2 | 3 | - | 5 |