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.

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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.