Currently the question, “Available in bulk?” in the census has help text,
Data is available in bulk if the whole dataset can be downloaded easily. It is considered non-bulk if the citizens are limited to getting parts of the dataset through an online interface. For example, if restricted to querying a web form and retrieving a few results at a time from a very large database.
If a dataset is published weekly and the current and previous weeks data are all available for download, is it considered “available in bulk”?
See also Open Data Handbook definition of bulk