Closed Access Embargo Metadata Only Access Open Access Restricted Unknown Total
Total 24 61 415 1314 999 45
2025 - 1 15 20 10 - 46
2024 - 41 25 206 133 - 405
2023 1 4 51 282 179 9 526
2022 2 6 50 223 177 4 462
2021 3 4 57 240 141 10 455
2020 9 5 108 202 186 8 518
2019 9 - 109 139 170 14 441
not yet published - - - 2 3 - 5