Data for the above chart can be downloaded here: OASPA Members CC-BY Growth_Data to 2015_CC0
A total of 707,798 articles were published with the CC-BY license in open access-only journals by members of OASPA during the period shown above, with 160,955 of those being published in 2015.
OASPA members were invited to share their data to update the previous post on this topic.
Figures for open access-only titles were supplied by the following members of OASPA as number of CC BY articles published per year since implementation of the license by that publisher:
AIP (2011-2015), AOSIS (2012-2015), BioMed Central (2000-2014), BMJ (2013-2015), Cogitatio (2013-2015), Company of Biologists (2014-2015), Copernicus Publications (2007-2015), CSIC (2015), CUP (2012-2015), ecancermedicalscience (2007-2015), E-journALL (2014-2015), Elementa (2015), eLife (2012-2015), Entrepreneurship & Sustainability Issues (2013-2015), Frontiers (2012-2015), Hindawi (2006-2015), Hipatia (2013-2015), Ideas in Ecology & Evolution (2014-2015), IDEA/USACH (2014-2015), Institute of Historical Research (2012-2015), IRPA (2014-2015), ISS PAS (2015), IT Con (2011-2015), JMIR Publications (2000-2015), J. Terrorism Research (2011-2015), Karger (2015), Libertas Academica (2015), MDPI (2008-2015), Military Technical Courier (2013-2015), NPG / Palgrave (2013-2014), OJAC (2014), OUP (2013-2015), Pan African Medical Journal (2012-2015), PeerJ (2013-2015), PLOS (2003-2015), Polish Botanical Society (2015), Portland Press (2015), Quanta (2012-2015), Royal Society (2013-2015), SAGE (2013-2015), Science Advances – AAAS (2015), ScienceOpen (2014-2015), Springer Nature (2015), Springer Open (2011-2014), SSPP (2005-2014), Stockholm University Press (2014-2015), The Quantitative Methods for Psychology (2014-2015), Ubiquity Press (2011-2015), UiT (2003-2015), University of Pittsburgh (2011-2015), Uopen Journals (2009-2015), WestJEM (2008-2014), ZPID (2012-2015).
This chart will be updated again in the future as more data is collected.
As last year, the data spreadsheet also now includes information we have from the same members regarding licenses used in OA-only journals other than CC BY, if applicable, as well as hybrid journal license information.
We are also pleased to again include data on the growth of the DOAB in terms of numbers of books and number of now covered.
Impressive! It would be nice to calculate what percentage of the articles in those fully OA journals uses a free license, and then calculate the trend of the median of said percentages. Otherwise a single megajournal could dominate the statistics, for instance.
Do we know how many of those cc-by articles are searchable as such, via semantic searches in general search engines or advanced search in OAI-PMH crawlers?
Claire Redhead says
All of the data supporting the chart are free to be downloaded and the figures show that no single journal is responsible for the results.
We have not collected any data regarding the number of these articles that are indexed in any particular search index, although we would imagine that a large percentage of these articles can be found in PubMed as well as the DOAJ.
Are there any known reasons why the growth rate has decreased since 2013?
Claire Redhead says
It’s quite likely we’re not capturing the full picture in this graph. For example, we do not include CC-BY content published in hybrid journals, which has been growing in particular in the UK, nor do we include freely available articles publish with more restrictive licenses. Some data from our members on both of these is available in the downloadable spreadsheet and you can see in particular the increase in hybrid CC BY articles.