More and more publications are becoming available in open access. This is a deliberate policy of NWO and ZonMw. By 2021, at least 9 out of 10 publications based on research funded by them will be accessible worldwide without barriers. This is according to a research report by CWTS (Center for Science and Technology Studies). The study was commissioned by the two organisations mentioned.
In 2021, both research funders aligned their open access policies with Plan S and cOAlition S. That choice has paid off.
More information can be found on NWO's site. The CWTS research report can also be found there.
Dutch National website providing information for academics about the advantages of open access to publicly financed research