Results of the censuses
An article explains the results of the censuses in detail, in particular with regard to change in religious diversity:
Senn, J., Stolz, J. & Monnot, C. (2024). Diversity dynamics. How local religious groups are born, stay, and die over time. Journal for the Scientific Study of Religion.
It is accessible via the link http://doi.org/10.1111/jssr.12907