OASPA Open Access License Types

"The charts show numbers of articles published in fully OA journals (left), and OA articles in hybrid journals (right), color-coded by license type. The most permissive licenses are at the bottom (CC BY), through to least permissive at the top, except for the tiny amount of CC0. The volume of publications from OASPA continues to grow. Just under 4M articles were published by members in the period 2000-2021. Just under 1M of the cumulative total were published in 2021, representing a growth of around 46% over the previous year and around one quarter of total recorded output. The total number of articles reported by members has more than doubled since 2018, and grown around 20x over the last decade. Publications in fully OA journals continue to dominate output, at around 4x that in hybrid. CC BY licenses (Creative Commons attribution only) dominate. They account for almost three quarters of members’ total output, and for 81% of their output in fully OA journals...."