| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 31 | 47 | 535 | 1564 | 1079 | 54 | |
| 2026 | - | 1 | 37 | 50 | 20 | 1 | 109 |
| 2025 | 2 | 11 | 85 | 128 | 44 | 2 | 272 |
| 2024 | 5 | 26 | 27 | 249 | 141 | 2 | 450 |
| 2023 | 2 | 6 | 52 | 293 | 188 | 10 | 551 |
| 2022 | 2 | - | 56 | 238 | 181 | 5 | 482 |
| 2021 | 3 | 1 | 57 | 249 | 142 | 10 | 462 |
| 2020 | 9 | 2 | 105 | 212 | 187 | 10 | 525 |
| 2019 | 8 | - | 116 | 143 | 172 | 14 | 453 |
| not yet published | - | - | - | 2 | 4 | - | 6 |