Sunday, November 11, 2007

Dramatic Growth of Open Access Series

The Dramatic Growth of Open Access Series is a quarterly series (end of March, June, September, and December) of key data illustrating the growth of open access, with additional comments and analysis. The series is available in open data and blogpost (commentary) editions. The quarterly series began December 31, 2005, and is predated by a peer-reviewed journal article featuring data as of February 2005. To download the data or the rationale & method, see the Dramatic Growth of Open Access dataverse Morrison, Heather, 2014-03, "Dramatic Growth of Open Access", Morrison, Heather [Distributor] V1 [Version]

Dramatic Growth of Open Access 2019

October 1, 2019 

March 31, 2019

December 31, 2018: 2018: best year yet for open access

June 30, 2018

March 31, 2018

December 31, 2017

September 30, 2017

Items of interest since September 30, 2017:

Directory of Open Access Books reaches milestone of 10,000 books

UK is "undergoing a transition towards open access in the UK and, and this reports shows...we are increasing the proportion of our research which is available open access at a considerable rate. We now make 37% of our outputs freely available to the world immediately on publication, and this increases to 53% after 24 months. Tickell, A., Chair, Universities UK, Monitoring the transition to open access: December 2017

June 30, 2017 

Items of interest since June 30, 2017:

PLOS reaches milestone of 200,000 articles

March 31, 2017: data is available for download from the dataverse. No commentary post this quarter.

Items of Interest since March 31, 2017

Kramer, D. (2017).  Steady, strong growth is expected for open-access journals. Physics Today 70:5, 24 doi: 10.1063/PT.3.355

December 31, 2016 Dramatic Growth of Open Access

September 30, 2016 Dramatic Growth of Open Access

June 30, 2016 Dramatic Growth of Open Access

Items of interest since June 30, 2016:
PubMedCentral now has more than 4 million articles  
Over 1 billion CC licensed works 

March 31, 2016 Dramatic Growth of Open Access
Update: DOAJ announces milestone of addition of PLOS metadata, instantly growing by 182,500 articles

December 31, 2015 Dramatic Growth of Open Access

June 30, 2015 Dramatic Growth of Open Access

2015 March 31, 2014

Items of interest since March 31:

Healthy growth in open access journals and articles published in them (thanks to Walt Crawford). 

2014 December 31, 2014 - 30 indicators of growth beyond the ordinary

2014 September 30, 2014 - useful facts and figures for Open Access Week 

Items of interest since September 30:

Khabsa & Giles (2014). The number of scholarly documents on the public web. PLOS ONE

-  estimates 114 million freely available english language scholarly documents

2014 Second Quarter (June 30, 2014) (with Jihane Salhab) 

Items of interest since June 30:
Open Access Directory sails past 4 million view

2014 First Quarter (March 31, 2014)

Items of interest since March 31, 2014

  • June 4: the home page for Peter Suber's MIT Press book Open Access passed the milestone of 100,000 page views (I highly recommend this as an excellent brief starting point for learning about OA).

December 31, 2013 Dramatic Growth of Open Access: first open source edition

The unstoppable growth of high quality open access resources - December 2013 early year-end edition.

Items of interest since December 11, 2013:
September 30, 2013 Dramatic Growth of Open Access 

Items of interest since September 30, 2013:

DOAJ notes that due to continuous improvement DOAJ has been deleting as many titles as it has been adding since August 2013. For this reason, DOAJ has been tantalizingly close to 10 thousand titles for some time.

PLoS celebrates milestone of100,000th article 

SCOAP3 set to begin January 1, 2014 

The unstoppable rise of open access. Spotlight by Peter Gruss, President, the Max Planck Society. 

June 30, 2013 Dramatic Growth of Open Access

Items of interest since June 30, 2013:

March 31, 2013 Dramatic Growth of Open Access
Download data, word version of commentary, chart

Items of interest since March 31, 2013

Bjork et al, preprint, Subject repositories: an overview

Outsell Open Access Report

December 31, 2012 Dramatic Growth of Open Access 

Items of interest since December 31, 2012

Peter Suber posts DOAJ details and analysis including breakdown.

DOAJ article search exceeds 1 million articles! - and for the first time more than half of the journals listed in DOAJ are provided article level metadata.

Anatomy of green open access - forthcoming article by Bjork, Laakso, Welling and Paetau

December 2012 early year-end edition

Items of interest since December 11, 2012

Open Access Tracking Project milestone - more than 20,000 items tagged since 2009 (thanks to Peter Suber)

MedOANet Open Access Tracker
combines and visualizes open access data for Mediterranean countries

Thank you, open access movement! September 30, 2012 Dramatic Growth of Open Access

June 30, 2012 Dramatic Growth of Open Access 

Items of interest since June 30, 2012

Public Library of Science celebrates milestone of 50,000 articles published (July 10, 2012)

Open Access Map - please help Ross Mounce build this visual approach to seeing the extent and growth of open access by adding repositories and other services that you know about.

Megajournals - trading knowledge. Interesting blogpost on large open access publishing operations - some data, more qualitative background.

Open Access in the UK - graph from Nature illustrating difference in open access by discipline. Found that of the approx. 85,000 articles published by researchers in the U.K. indexed in Web of Science in 2010, 40% were open access as of 2012 - 5% gold, 35% green. (My note - Web of Science will tend to understate research activity in the humanities and social sciences). Data from Yassine Gargouri according to Alma Swan on the GOAL list.

Open access and the dramatic growth of PLoS ONE, by Graham Steel

YouTube breaks records with 4 million creative commons licensed videos 

Directory of Open Access Journals now has more than 8,000 journals 

Two milestones - 600+ scholarly societies publish 700+ open access journals 

OA coming of age - opinion piece by David Solomon and Bo-Christoph Bjork in The Scientist

The impact of funding agency open access policies (March 31, 2012 Dramatic Growth of Open Access

Items of interest since March 31, 2012:

Happy 2012 Open Access Movement! December 31, 2011 Dramatic Growth of Open Access 

Items of interest since December 31, 2011
Mendeley Open Access update - Repository Man Les Carr congratulates Mendeley on a 47% increase in OA computer documents, reflecting an increase in participation.  (Note: I haven't been able to find the full Mendeley OA count recently so have dropped them off of the Dramatic Growth of Open Access. Any tips on how to quickly figure this number would be most appreciated).
Hathitrust - 10 million and counting 
Steady growth for Open Journal Systems and Open Conference Systems - thanks to Kevin Stranack:

The NIH Public Access Policy
  • Over 2.4 million articles are now in PMC. 
  • In addition to the NIH-funded papers deposited into PMC, publishers voluntarily deposit more than 100,000 papers per year. 
  • Every weekday, one half million users access the database, retrieving over 1 million articles.
  • Based on internet addresses, an estimated 25% of users are from universities, 17% are from companies, and 40% from the general public.
The challenges of success: dramatic growth of open access early year-end edition
December 11, 2011

Items of interest since December 11, 2011
20 million item on Europeana
Creative Commons 9th birthday - 500 million CC licensed items
Growth in scholarly society OA publishers since 2007 (Dec. 2) 
Mike Eisen's blogpost listing 9 PLOS ONE clones supports my June 30 hypothesis that we are entering a phase of competition for open access
PLOS ONE 5th birthday many milestones 

  • The growth of the PLoS ONE exceeded even the most optimistic predictions. In the first full year of publication it published 1,230 articles (making it larger in volume than all but about 100 journals) and, within 4 years, it became the largest peer-reviewed journal in the world. To date, PLoS ONE has published more than 28,700 articles and in 2011 alone it will publish almost 14,000 articles (meaning that approximately 1 in 60 of all articles indexed by PubMed for 2011 will have been published in PLoS ONE). 
2011 the year of open BCcampus' Paul Stacey's inclusive view of the expansion of open in many dimensions
2010/11 Report on Open Access and Preservation Policies in Europe 
Katarina Lovrecic Open Access year-end highlights: coming up roses? 
Peggy Schaeffer Dryad milestone - 100th journal (many, but not all, are open access)
2011 letter from Gregg Gordon, President, SSRN
Social Sciences Research Network stats
September 30, 2011 Dramatic Growth of Open Access

Quick reference (for viewing) 
Quick reference (download as excel or PDF)
Rationale and method
Dataverse for downloading data.

Items of interest since September 30, 2011
Sherpa services blog: 60% of journals allow immediate self-archiving of post peer-reviewed articles
Open Access Directory just sailed past our 2 millionth view of the OAD
One million works available online through RePEC (Nov. 26, 2011) 

Let the competition begin! June 30, 2011 Dramatic Growth of Open Access
Quick reference (viewing)
Quick reference (download as excel or PDF)
Rationale and method
Dataverse for downloading data.

Items of interest since June 30, 2011

March 31, 2011 Dramatic Growth of Open Access

Those ACTIVE open access journals! Data from Ulrich's strongly suggesting that open access journals are more likely to be active than subscription-based journals from major commercial publishers.

Lewis, David W. (2010) How to think about the Pace of Substitution of Open Access Academic Journals for Traditional Subscription Journals

Over 9,000 OJS installations (PKP, April 7, 2011)
The PubMedCentral Picture: Steady Growth, Downloadable Stats OpenBioMed.Info

BASE number counter fixed with new version: 1 million more records than recorded in Dec. 2010 (26,498,582 from 1,693 content providers as of February 14, 2011)

Hindawi 40% growth in submissions in 2010

PLoS ONE: now THE world's largest journal?

2010 Dramatic Growth of Open Access
2010 Show Growth - for quick 2010 annual growth stats plus average daily, weekly, and monthly growth by service
Polish version created by E-LIS Editor Bożena Bednarek-Michalska, which can be found here and here.

Thompson-Reuters chart shows 20% gold OA article growth as compared to 3.5% overall article growth

December 11, 2010 early year-end edition

During the week of October 4 - 8, 2010, open access and free journal collector extraordinaire Jan Sczcepanski collected his 10,000th journal. Thanks, Jan!

Preliminary results of SOAP (Study of Open Access Publishing) Survey. At least 120,000 articles / year published as open access (this is about 8% of the estimated 1.5 million peer-reviewed articles published per year). Excludes non-english journals.

September 30, 2010

Hindawi's monthly submissions grow to over 2,000 September 7, 2010 announcement from Hindawi's Paul Peters

More than 25 million records in BASE August 3, 2010 announcement, Dirk Pieper, BASE

June 30, 2010

Wellcome Trust: Robert Kiley reports 44% compliance rate with OA policy for 2009

March 31, 2010

Social Science Research Network
2010 is our 16th year and it is off to a great start. Our eLibrary ( has delivered over 37.4 million downloads to date and grown to 290,000 documents and 138,000 authors - increases over the last year of 53,000 and 22,000 respectively. Our CiteReader technology, developed with ITX Corp, has captured over 6 million references, 5.7 million footnotes, and close to 3.9 million citation links. We believe this growth in multi-disciplinary, open access content is exciting and contributing to innovative scholarly research in social science and humanities.

PLoS One: Open Access to the Scholarly Journal Literature: Status 2009. Random study of 1,837 titles found of articles published in 2008, over 8% were open access on the publisher's website, and over 11% otherwise freely available, for an overall average of over 20% of articles freely available. There was a disparity in results by discipline.

Project Euclid exceeds one million pages of open access content.

NDLTD Union Catalog Surpasses One Million Electronic Theses and Dissertation

Over 20% of world's scholarly journals are now fully open access - kudos to DOAJ!

Internet Archive: Over 1 Million Books now Available Free to the Print Disabled

March 31, 2010

Notes February 3, 2010: Jim Tills' method for determining CIHR policy compliance, and more than 5,000 journals using OJS.

December 31, 2009, New Year's Eve edition

December 11, 2009, early year-end edition

Strong Open Access Growth Reported by Hindawi. Hindawi's figures for 2009 show more than doubling of submissions, and strong growth in accepted manuscripts, indicating that in addition to strong growth in number of OA journals, there is evidence of strong growth in articles within established OA journals as well.

September 30, 2009

The Dramatic Growth of PLoS One: soon-to-be world's largest journal

June 30, 2009

March 31, 2009

Update April 7: Open-access policy flourishes at NIH. Meredith Wadman. Nature News, April 7, 2009. Thanks to Peter Suber on Open Access News.

Looking for downloadable data? Go straight to the DGOA Dataverse.

Directory of Open Access Journals (DOAJ) Growth 2005-2008. Charts illustrated the growth in journal titles, journals searchable at article level, articles searchable at article level, and growth in growth rate for all measures in 2008.

Open Access Journals: Around the World, and Top OA Journal Countries
OpenDOAR exceeds 1,300!

December 31, 2008 Open Data - Happy New Year Brief Edition

December 11, 2008 Early Annual Edition

September 30, 2008

More evidence of a spike in DOAJ in 2008
Gavin Baker presents more evidence of a spike in DOAJ in 2008. Factors to consider when considering DOAJ as an imperfect measure of open access journal numbers and growth are presented.

arXiv exceeds half a million items! (October 3, 2008)
Estimate: NIH Public Access compliance rate has already tripled with mandatory policy (up to August 2008)

Twice as much gold OA articles in 2008 as in 2006!

Housekeeping: Dramatic Growth of Open Access Release Dates

DOAJ Over 200,000 searchable articles!

DOAJ growth rate nearly doubles in a year. From 2007 to 2008, the DOAJ growth rate increased from 1.2 to 2.2 new titles, on average, per calendar day.

Noteworthy Dramatic Growth July 2008: PMC and RoMEO

Scientific Commons exceeds 20 million items (July 2008)

Dramatic Growth of Open Access: June 30, 2008 update
- note corrections to growth rate
Open Data Edition (showing quarterly and annual growth) - plus PMC free data, second sheet.
Open Data Edition (just data)
PMC Journals

The Dramatic Growth of Open Access: Open Data Edition (from March 31, 2008)
The Dramatic Growth of Open Access: Open Data Full Data Edition (to March 31, 2008)

March 31, 2008

More baseline data for PubMedCentral. Baseline data for PMC on the eve of the NIH new open access mandate, April 7, 2008.

Cancer literature: 13% free. Baseline data for free full-text, before the NIH open access mandate takes effect.

December 31, 2007 Dramatic Growth of Open Access

Dramatic Growth of Open Access: 2007 Interim Report and Predictions for 2008 Minor Update

Directory of Open Access Journals: Already the Biggest Big Deal?

DOAJ: 80 new titles in 30 days (Nov. 28, 2007)

September 30, 2007

June 30, 2007

March 31, 2007
Dramatic Growth March 2007 Update & Open Data Edition

December 31, 2006
Dramatic Growth December 2006 & Predictions for 2007
September 30, 2006
September 2006 Update.
June 30, 2006
June 30, 2006 Update.
March 31, 2006
March 31, 2006 Update.
December 31, 2005
Dec. 31, 2005 Update and 2006 Predictions
February 2005 data
The Dramatic Growth of Open Access: Implications and Opportunities for Resource Sharing, Journal of Interlibrary Loan, Document Delivery & Electronic Reserve, 16, 3 (2006).

About the Dramatic Growth of Open Access Series

40 new titles added to PubMedCentral in the last 60 days!

PubMedCentral Journals: Baseline Data

This post is designed to gather other posts and data editions of this series, and is backdated so that updates are not incorrectly identified as new posts.
Last updated September 23, 2007

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