In the bottom 2016.
This topic somehow bothers me and I want to find generic solution to this, use some code with date.year or something to be always up to date and never bother about it.
P.S. Why do people write this copyright?
I am not a lawyer, but as far as I know you can only claim copyright on something in the year you actually created it (or changed it). So if you wrote a blog post in 2018 you cannot say © 2019 on that blog post the next year and © 2020 the year after, etc. Otherwise the copyright would never expire.