Pretty sure, its the only spreadsheet for the Greatest Games event that I could find on my PC. It's possible that I participated in 2015 as well but I'm not too sure. Either way it's been a long time.
Looking back through the previous threads, it says you signed up in 2015 and 2016, but whether you submitted a list isn't as easy to figure out from my side of things.
This discussion maybe sounds a bit weird, but believe me, there's a good reason why I'm looking for this kind of information!
I take it this is a sign-up. I mean, you participate every year anyway, so this shouldn't be a surprise.