| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 31 | 46 | 539 | 1561 | 1074 | 55 | |
| 2026 | - | 1 | 38 | 47 | 19 | 1 | 106 |
| 2025 | 2 | 10 | 88 | 128 | 40 | 3 | 271 |
| 2024 | 5 | 26 | 27 | 249 | 140 | 2 | 449 |
| 2023 | 1 | 6 | 52 | 293 | 189 | 10 | 551 |
| 2022 | 2 | - | 56 | 238 | 181 | 5 | 482 |
| 2021 | 4 | 1 | 57 | 249 | 141 | 10 | 462 |
| 2020 | 9 | 2 | 106 | 212 | 189 | 8 | 526 |
| 2019 | 8 | - | 115 | 143 | 171 | 16 | 453 |
| not yet published | - | - | - | 2 | 4 | - | 6 |