API: Evolution of signatures - Possible?

[Valentin VASSORT]

Dear Change.org community,

I am currently writing a paper on the adoption of Change.org in France.

The idea is to do a graph with the number of people that sign petitions from the 1st day until now.

I have a list of petitions, but I now would like to extract the number of people that sign them in a chronological order.

Thank you very much for your help,

Valentin