Good morning and congrats on your anniversary as a non-smoker!
We have had some recent talk about the gum and maybe you can glean some info from it. Try following this thread:
http://www.medhelp.org/posts/Smoking-Addiction/Effects-of-Long-Term-Nicorette-Use/show/730769?post_id=post_4517392
I quit with Chantix so I am not personally knowledgeable, but I do know some "gum" users who have been chewing for many years and are having a difficult time trying to stop.
If I could give you any advice, it would be to try to duplicate the flavor with chewing gum and go for it! You may want to read some articles at whyquit.com as you will be dealing with withdrawals.
We are here for you and hopefully we can help you through some of the rough patches.
Good luck to you : )