That tells them everything they'd need to know to discriminate. If you took the SAT 40 years ago, it doesn't really matter if it was 42 or 47.
People are biased 25 vs. 55 not 33 vs. 34.
People are biased 25 vs. 55 not 33 vs. 34.
Unfortunately, there isn't really a viable way to prevent employers from finding out your age from your resume/CV.