[Anti-Aging] Do I need to wear sunscreen if I'm indoors sitting at a desk near a window all day?

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I've never really thought about this but it recently hit me that I've been sitting by this window in my room for basically all my life and I've never bothered to put on sunscreen because I was indoors, not out doors (also for what it's worth we had some special expensive windows installed that does a bunch of stuff and also blocks 71% UV rays). Am I being randomly worried or should I have been using sunscreen all this time? If yes like do I need to get a strong one or something? Thanks!
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Submitted by iMakeBaadChoices