perennially

comparative more perennially · superlative most perennially

1. Year after year (literally: each year).
2. Constantly; with frequent recurrence.

   Add to that a pair of black eyes with yellowish whites, a proud glance, gleaming teeth, and lips which were perennially pomaded and redolent of musk. As for her dress, it was invariably rich, effective, and chic, yet in good taste.

   1867, Fyodor Dostoyevsky, chapter III, in The Gambler, translated by C. J. Hogarth^(https://en.wikisource.org/wiki/The_Gambler_(1867)/III)

   1 more example

   The conversation taking place in a cramped corridor at the Stadium of Light had turned to the lack of English players on view on Saturday afternoon. Martin Jol barely paused for thought before answering a perennially vexed question. "It's a problem," said Fulham's manager. "You have to deal with it."

   2013 August 20, Louise Taylor, The Guardian