Loading multiple URL pages

Hi,

I'm trying to load data from ATinternet using an URL which finish by : {start:'2015-01-01',end:'2015-06-30'}}&max-results=100&page-num=1

Everything works well but I don't know how many pages I need to load to get all available data in the defined period of time...

Is there a solution, like a loop to increment the page number until all data are retrieve ? 

Thanks a lot by advance !

Quentin