Premium Membership Question

I have had this account for about 4 years. Rarely use it any more but the account I had just before it I was rated quite high and with my decline in interest in chess (due to university) has led to a decline in my ability.
I'm wondering if I acquire a premium membership will all of my previous games be accessible for me to analyse?

If so I'm buying one.

Thanks for any help. 

yes, I am able to access the games that I played the day that I joined chess.com because I bought the diamond membership, I'm not sure if you need a diamond membership to do this though, it might come with platinum or gold memberships but I'm not sure, however I do know that with diamond you are able to get all of your games.