The Global Open Data Index is an annual effort to measure the state of open government data around the world. The crowdsourced survey is designed to assess the openness of specific government datasets according to the Open Definition. The unique benefits of the Open Data Index include: - - Results from a citizen’s perspective and not simply reliant on government claims of openness. - A simple group of datasets that offer powerful insights into key government functions and performance, and that can be compared consistently across countries. - Pioneering methods, with topical experts reviewing global submissions for each dataset to ensure reliability.