Calculating inflation rate for token with increasing circulating supply

Hello,

I am working on a small project and trying to find out how to calculate a coin/token inflation rate for different projects. I understand how to look at those w/fixed supply, but for those with scheduled token increases, I’m a little confused.

For example:

https://dusk.network/uploads/Highlights-Insights-Economic-Model-Dusk-Network.pdf

https://dusk.network

Any insight on a simple formula would be helpful.

Thanks!