Userform Option (Radial) Button - Retain Last choice

Hi there,
I am using Option (or if you prefer, Radial) buttons within a Userform.

To simplify the problem, let's say that there are two option buttons - Male or Female. The User selects "Male", fills out various other pieces of information and then closes down the Userform.
The next time the User opens the Userform, I want their choice to be remembered so that "Male" is selected by default.
Should the User change their mind at some point in the future and change the option to "Female" and then close the Userform, it will be defaulted to "Female" the next time it is opened.

Hopefully that illustrates my objective..

My question is, am I able to capture and alter the default choice of Options, without referencing a cell somewhere within the workbook?

Thanks for Reading the post. Look forwards to finding out what Options are available to me!