Help with formula for years and months

Hi, i was hoping someone could help me setting up a formula for calculating the years and months between a date and today. I have the date of birth of students and need to put how many years and months old they are. I use excel in spanish so all the formulas y have tried are in spanish and i just couldnt get them right. It need to look something like this:

I need to this for more than a thousand students and im going insane doing it manually. 

I would appreciate a lot if you could help me out ❤️