The Netherlands is now a part of the IFLA Library Map of the World. This is source of basic library statistics and is providing country-level data and a worldwide comparison of different library performance metrics by region.
The Library Map of the World is also providing access to SDG stories, demonstrating how libraries in different countries contribute to the United Nations Sustainable Development Goals.
The Dutch page: https://librarymap.ifla.org/countries/Netherlands
More information on the IFLA website: https://librarymap.ifla.org/about