For those who don't speak Spanish, año is "year", and without the accent on the "ñ", it's a body part that you can probably guess :)
(That said, it's one that's so common it's worth learning the keyboard shortcut for. On a Mac it's "opt-n, n".)
setxkbmap us -variant intl -option compose:rwin]
Press altgr or right win key + [aeiou] or n.