| Closed Access | Embargo | Metadata Only Access | Open Access | Restricted | Unknown | Total | |
|---|---|---|---|---|---|---|---|
| Total | 30 | 48 | 532 | 1582 | 1092 | 52 | |
| 2026 | - | 2 | 40 | 61 | 20 | 1 | 124 |
| 2025 | 2 | 13 | 77 | 128 | 50 | 1 | 271 |
| 2024 | 5 | 24 | 27 | 252 | 143 | 2 | 453 |
| 2023 | 1 | 6 | 52 | 294 | 189 | 11 | 553 |
| 2022 | 2 | - | 56 | 238 | 182 | 4 | 482 |
| 2021 | 3 | 1 | 58 | 250 | 143 | 10 | 465 |
| 2020 | 9 | 2 | 106 | 213 | 190 | 8 | 528 |
| 2019 | 8 | - | 116 | 144 | 171 | 15 | 454 |
| not yet published | - | - | - | 2 | 4 | - | 6 |