| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 32 | 46 | 492 | 1501 | 1034 | 75 | |
| 2026 | - | 1 | 19 | 22 | 7 | - | 49 |
| 2025 | 3 | 10 | 76 | 104 | 36 | 1 | 230 |
| 2024 | 5 | 25 | 26 | 245 | 134 | 2 | 437 |
| 2023 | 2 | 7 | 50 | 291 | 180 | 15 | 545 |
| 2022 | 2 | - | 52 | 235 | 180 | 8 | 477 |
| 2021 | 3 | 1 | 55 | 248 | 139 | 15 | 461 |
| 2020 | 9 | 2 | 103 | 212 | 186 | 12 | 524 |
| 2019 | 8 | - | 111 | 142 | 168 | 22 | 451 |
| not yet published | - | - | - | 2 | 4 | - | 6 |