| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 32 | 47 | 501 | 1507 | 1047 | 57 | |
| 2026 | - | 1 | 18 | 23 | 7 | - | 49 |
| 2025 | 3 | 10 | 77 | 104 | 36 | 1 | 231 |
| 2024 | 5 | 26 | 26 | 245 | 134 | 2 | 438 |
| 2023 | 2 | 7 | 51 | 292 | 184 | 12 | 548 |
| 2022 | 2 | - | 56 | 238 | 180 | 5 | 481 |
| 2021 | 3 | 1 | 56 | 249 | 141 | 12 | 462 |
| 2020 | 9 | 2 | 104 | 212 | 189 | 8 | 524 |
| 2019 | 8 | - | 113 | 142 | 171 | 17 | 451 |
| not yet published | - | - | - | 2 | 5 | - | 7 |