Cumulative Sum Table

It seems to me that I have the solution, although there is always room for improvement, I share the file with you.

As I said at the beginning, I managed to do it with a row_number as an id, I still don't know if it's the best solotion, but it seems to funionize.

Thank you very much in advance for the help and I hope you can be helpful.

This type of table is very useful if you want to create time series with the maturation of different years.

I look forward to hearing from you.

Thank you very much in advance.