Date of birth to age in chart

I have a table called Members with a date field for date of birth.
An the dashboard I want to show a chart with the date of birth as age.
How can I do that? Now only the year is shown.


This should be done on the database side, or you can do it manually but it will be static data as shown in the image below

Thank you, but I don’t see this options in mij settings.
Also, I can’t set the Group by to an computed of formula database field.