The answer is we don’t know.

BUT my guess is that it’s the good work of programs that connect underrepresented undergrads to grad opportunities, contrast against the rapid growth of the Hispanic population vs rest-of-America including Black Americans. Graduate funnel programs that have existed for decades will show a lagging correlation to undergrad affirmative action and Black outreach. Undergrads and then grads need to adjust to the Hispanic population growth to fix the numerator https://costar.brightspotcdn.com/c1/86/16e793de4cdcaa84724a5f7990d9/slide277.jpeg