That's nice to know that yours has kept so well. I don't recall exactly when I bought mine, and I got a few rolls when I bought a big box of assorted 120 film someone sold who was getting out of medium format, but I've keep it frozen since.
I like Kodak E100G quite a lot actually, I just wish there were some faster choices on today's market. I hope my frozen (and definitely bought new when the discontinuation was announced) Provia 400X has kept well frozen as well.