As usual the open access movement has much to celebrate as 2017 draws to a close, and the whole world has much to look forward to from open access in 2018. As of today there are 4.6 million articles in PubMedCentral, thanks in large measure to constantly increasing participation by scholarly journals; sometime in 2018 this is likely to exceed 5 million. DOAJ added a net 1,272 journals (3.5 / day) and showed even stronger growth in article searchability; a DOAJ milestone of 3 million searchable articles in likely to come in 2018. The Directory of Open Access Books nearly doubled in size and now has more than 10,000 books from 247 publishers. Bielefeld Academic Search Engine, the best surrogate for overall growth, continues to amaze with over 120 million documents, growth of 17.3 million in 2017, a 17% growth rate on a very substantial base; a 20% growth in content providers is an indication of the overall growth of the repository movement. arXiv's growth rate was 10% while newcomer arXiv clones socRxiv grew by 187% and bioRxiv by 151%. REPEC grew by 13%, SCOAP3 by 32%. Internet Archive grew by 31 billion web pages, 4 million texts, 2.4 million images, 800,000 movies, and 600,000 audio recordings. Following are selected details indicating the content numbers at the end of 2017, 2017 growth by number, percentage, and where warranted, by day.
Full data can be downloaded from here: https://dataverse.scholarsportal.info/dataverse/dgoa
Details (selected)
Totals are from December 31, 2017. Annual growth: Dec. 31, 2017 - Dec. 31, 2017
Free journals
Directory of Open Access Journals
10,727 journals
- 2017 growth: 1,272 journals (3.5 / day), growth rate 13%
- 2017 growth: 1,175 (3.2 / day), growth rate 18%
- 2017 growth: 391,443 (1,072 / day), growth rate 16%
Electronic Journals Library
59,240 journals that can be read free of charge (2017 growth: 3,678 (10 / day), 7% growth)
Free books
OECD ilibrary
11,690 e-book titles (2017 growth 640 (2 / day), growth rate 6%
Directory of Open Access Books
10,315 academic peer-reviewed books, 247 publishers
- 2017 growth: 4,713 (13 / day), growth rate 84%, increase of 80 publishers
Bielefeld Academic Search Engine
120,383,423 documents
- 2017 growth: 17.3 million documents (47,000 / day), growth rate 17%
- 2017 growth: 1,015 (3 / day), growth rate 20%
3,464 repositories -- 2017 growth 179, (.5 / day), growth rate 5%
Registry of Open Access Repositories
4,597 repositories - 2017 growth 232, 1 / day), growth rate 5%
PubMedCentral
4.6 million items - 2017 growth 500,000, (1,370 / day), growth rate 12%
2,446 journals actively participating in PMC - 2017 growth 120, growth rate 5%
1,832 journals in PMC with immediate free access - 2017 growth 112, growth rate 7%
1,478 journals in PMC with all articles open access - 2017 growth 52, growth rate 4%
664 journals in PMC with some articles open access - 2017 growth 95, growth rate 17%
2,093 full participation journals (deposit ALL articles in PMC) - 2017 growth 120, growth rate 6%
329 NIH portfolio journals (deposit NIH funded article in PMC) - 2017 growth 5, growth rate 2%
4,494 selective deposit (deposit some articles in PMC) - 2017 growth 421 (1 / day), growth rate 10%
33% of articles keyword "cancer" freefulltext within 1 year of publication (41% at 2 years, 45% at 5 years, 26% with no date limiter)
Milestone to watch for in 2018: 5 million items
arXiv
1,342,725 items - 2017 growth 123,501 (338 / day), growth rate 10%
SocArXiv
1,814 preprints - 2017 growth 1,183 (3 / day), growth rate 187%
bioRxiv
18,822 article - 2017 growth 11,322 (31 / day), growth rate 151%
RePEC
2,279,139 downloadable items - 2017 growth 257,605 (706 / day), growth rate 13%
Internet Archive
310 billion webpages - 2017 growth 31 billion webpages (85,000 / day), growth rate 11%
3.8 million video (movies) - 2017 growth 800,000 (2,192 / day), growth rate 27%
3.8 million audio recordings - 2017 growth 600,000 (1,644 / day), growth rate 19%
15,000,000 texts - 2017 growth: 4 million (11,000 / day), growth rate 36%
3.7 million images - 2017 growth: 2.4 million (6,575 / day), growth rate 185%
SCOAP3
18,042 articles - 2017 growth: 4,410 (12 / day), growth rate 32%
This post is part of the Dramatic Growth of Open Access series.
