| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 30 | 64 | 476 | 1366 | 1013 | 50 | |
| 2025 | 1 | 5 | 53 | 43 | 16 | 1 | 119 |
| 2024 | 5 | 43 | 24 | 215 | 136 | 2 | 425 |
| 2023 | 1 | 4 | 61 | 286 | 181 | 11 | 544 |
| 2022 | 2 | 5 | 56 | 230 | 177 | 4 | 474 |
| 2021 | 3 | 2 | 57 | 245 | 142 | 10 | 459 |
| 2020 | 9 | 5 | 110 | 203 | 188 | 8 | 523 |
| 2019 | 9 | - | 115 | 142 | 170 | 14 | 450 |
| not yet published | - | - | - | 2 | 3 | - | 5 |