{"id":"preprints","title":"Preprints are exploding - but do they share data?","asOf":"2026-06-29","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 2026-06-29. Retrieved from https://seqdesk.org/data/preprints","data":{"schemaVersion":1,"generatedAt":"2026-06-29T17:29:54.205Z","asOf":"2026-06-29","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":0.062,"publishedShare":0.525,"gap":8.468,"latestVolume":185896,"latestVolumeYear":2025,"earliestVolume":7585,"earliestVolumeYear":2016,"volumeGrowth":25},"series":{"volume":[["2016",7585],["2017",15755],["2018",31214],["2019",48759],["2020",128323],["2021",153828],["2022",147780],["2023",176120],["2024",181978],["2025",185896]],"preprintDataShare":[["2016",0.014],["2017",0.014],["2018",0.012],["2019",0.018],["2020",0.142],["2021",0.112],["2022",0.106],["2023",0.089],["2024",0.064],["2025",0.062]],"publishedDataShare":[["2016",0.41],["2017",0.434],["2018",0.455],["2019",0.479],["2020",0.46],["2021",0.47],["2022",0.472],["2023",0.478],["2024",0.504],["2025",0.525]]},"byYear":{"2016":{"preprints":7585,"withData":105,"share":0.014,"published":271165,"publishedWithData":111045,"publishedShare":0.41},"2017":{"preprints":15755,"withData":216,"share":0.014,"published":308963,"publishedWithData":134154,"publishedShare":0.434},"2018":{"preprints":31214,"withData":379,"share":0.012,"published":348682,"publishedWithData":158708,"publishedShare":0.455},"2019":{"preprints":48759,"withData":876,"share":0.018,"published":401411,"publishedWithData":192101,"publishedShare":0.479},"2020":{"preprints":128323,"withData":18162,"share":0.142,"published":560584,"publishedWithData":257921,"publishedShare":0.46},"2021":{"preprints":153828,"withData":17278,"share":0.112,"published":709691,"publishedWithData":333253,"publishedShare":0.47},"2022":{"preprints":147780,"withData":15606,"share":0.106,"published":802839,"publishedWithData":379076,"publishedShare":0.472},"2023":{"preprints":176120,"withData":15604,"share":0.089,"published":724588,"publishedWithData":346089,"publishedShare":0.478},"2024":{"preprints":181978,"withData":11608,"share":0.064,"published":720082,"publishedWithData":363162,"publishedShare":0.504},"2025":{"preprints":185896,"withData":11617,"share":0.062,"published":874549,"publishedWithData":458923,"publishedShare":0.525},"2026":{"preprints":99188,"withData":2176,"share":0.022,"published":398206,"publishedWithData":212136,"publishedShare":0.533,"partial":true}}}}