Each year; annually (used for yearly events, statistics, routines, etc.).
会社は毎年忘年会を開く。
The company holds a year-end party every year.
彼は毎年外国へ旅行するのが好きだ。
He likes to travel abroad every year.
この祭りは毎年九月に行われる。
This festival is held every year in September.