{"id":"preprints","title":"Preprints are exploding - but do they share data?","asOf":"2026-09-21","source":"https://seqdesk.org/data/preprints","license":"Aggregate facts compiled by SeqDesk from public archives (EMBL-EBI / Europe PMC) and re-served under each source's terms. Only whole-archive percentages and counts are published — no record-level identifiers. Provided as-is, no warranty. Full method & sources: https://seqdesk.org/data/preprints","citation":"SeqDesk (2026). Preprints are exploding - but do they share data? [original data analysis]. Snapshot 2026-09-21. Retrieved from https://seqdesk.org/data/preprints","data":{"schemaVersion":1,"generatedAt":"2026-09-21T13:44:23.924Z","asOf":"2026-09-21","title":"Preprints are exploding — but do they share data?","subtitle":"Preprint volume has grown roughly twenty-fold in a decade, yet preprints link a dataset far less often than open-access MEDLINE-indexed journal papers. Whole-index counts from Europe PMC, re-counted weekly. The preprint data-link share is shown for transparency but is sensitive to annotation lag — read the gap and the volume, not single-year wobbles.","source":"EMBL-EBI / Europe PMC (REST search, whole-index hit counts)","headline":{"latestYear":2025,"preprintShare":0.064,"publishedShare":0.816,"gap":12.75,"latestVolume":187043,"latestVolumeYear":2025,"earliestVolume":7585,"earliestVolumeYear":2016,"volumeGrowth":25},"series":{"volume":[["2016",7585],["2017",15755],["2018",31215],["2019",48759],["2020",128326],["2021",153831],["2022",147775],["2023",176120],["2024",182129],["2025",187043]],"preprintDataShare":[["2016",0.014],["2017",0.013],["2018",0.011],["2019",0.017],["2020",0.156],["2021",0.126],["2022",0.124],["2023",0.104],["2024",0.065],["2025",0.064]],"publishedDataShare":[["2016",0.544],["2017",0.61],["2018",0.641],["2019",0.682],["2020",0.699],["2021",0.735],["2022",0.757],["2023",0.763],["2024",0.796],["2025",0.816]]},"byYear":{"2016":{"preprints":7585,"withData":103,"share":0.014,"published":271219,"publishedWithData":147521,"publishedShare":0.544},"2017":{"preprints":15755,"withData":202,"share":0.013,"published":309024,"publishedWithData":188392,"publishedShare":0.61},"2018":{"preprints":31215,"withData":355,"share":0.011,"published":348806,"publishedWithData":223684,"publishedShare":0.641},"2019":{"preprints":48759,"withData":817,"share":0.017,"published":401689,"publishedWithData":273992,"publishedShare":0.682},"2020":{"preprints":128326,"withData":20017,"share":0.156,"published":558383,"publishedWithData":390384,"publishedShare":0.699},"2021":{"preprints":153831,"withData":19357,"share":0.126,"published":707037,"publishedWithData":519800,"publishedShare":0.735},"2022":{"preprints":147775,"withData":18330,"share":0.124,"published":802108,"publishedWithData":606948,"publishedShare":0.757},"2023":{"preprints":176120,"withData":18259,"share":0.104,"published":731760,"publishedWithData":558697,"publishedShare":0.763},"2024":{"preprints":182129,"withData":11775,"share":0.065,"published":736139,"publishedWithData":586210,"publishedShare":0.796},"2025":{"preprints":187043,"withData":12029,"share":0.064,"published":882127,"publishedWithData":719930,"publishedShare":0.816},"2026":{"preprints":160078,"withData":6337,"share":0.04,"published":629238,"publishedWithData":514680,"publishedShare":0.818,"partial":true}}}}