I doubt that there's enough data to plot. For early modern South East Asia, only a couple of records per century survive for the total populations of the main

I doubt that there's enough data to plot. For early modern South East Asia, only a couple of records per century survive for the total populations of the main cities, and those are pretty dodgy. There might not be any quantitative records of religious beliefs. When our ancestors encountered people of a different religion, it was more about chopping heads off than about counting them.