| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 30 | 68 | 471 | 1394 | 1032 | 50 | |
| 2025 | 1 | 7 | 63 | 61 | 21 | 1 | 154 |
| 2024 | 5 | 44 | 26 | 216 | 138 | 2 | 431 |
| 2023 | 1 | 5 | 57 | 289 | 183 | 11 | 546 |
| 2022 | 2 | 5 | 51 | 230 | 182 | 4 | 474 |
| 2021 | 3 | 2 | 55 | 245 | 144 | 10 | 459 |
| 2020 | 9 | 5 | 104 | 209 | 190 | 8 | 525 |
| 2019 | 9 | - | 115 | 142 | 170 | 14 | 450 |
| not yet published | - | - | - | 2 | 4 | - | 6 |