Hi Jodie

I just had a look on the sydneyIVF site - they have a bit of information about egg freezing. It is under the Fertility and Conception tab. This may help - it also gives stats on the results of a recent study.

They seem to define social storing of eggs as being someone who stores eggs for any reason that isn't medical (like for someone starting chemotherapy) so maybe although the information that you are finding defines social storage it is actually what you are looking for.

Hope that this helps.