The questionairres for the 2023 census were not available online. The data can be looked up online, but there was no census form that could be filled out.They would not have been so forward-looking in 1995 when they started planning the census process for 2000.There was probably not an online form in 2023 for the reasons in Anon's answer. But also because the big costs are not getting the form to people and then getting it scanned. The big costs are in counting hard-to-count groups and in getting houses that do not submit their forms enumerated.