The Research Data Year regularly reports on progress on number of participating publishers, journal data policies implementation, and occurrence of data availability statements in articles. See below the dashboard for Q1 of 2020

Number of publishers participating: 11
Participating publishers in Q1: Cambridge University Press, De Gruyter, Elsevier, Emerald, IoPP, Karger, Oxford University Press, Sage, Springer Nature, Taylor & Francis, Wiley.

Number of participating journals: 12,128

Journals with Data Policies: 58%
Percentage of journals that have data policies implemented. For more information on the type of data policies policies, click here.

Average percentage of journals that have a data policy: 35%
Across participating publishers, on average 35% of journals have data policies implemented.

Percentage of articles that contain a Data Availability Statement: 9%
Data provided by publisher or based on an analysis of a statistically significant sample of articles published between 2020-Jan-1 and 2020-Mar-31 from each publisher by Ripeta. The total percentage presented is a weighted average across the publishers.