Might want to update that to include this year’s posts.
Might as well include next year’s posts, too.
As of the 1996 Copyright Code, it’s no longer necessary to place a symbol or the year on anything to ensure that it is copyrighted. Everything is now automatically copyright from the moment it is in print.
I admit I still like to see the date to know when something was published and so, as a courtesy to others, I highly recommend putting the date there, but it doesn’t change anything not to.