“In 1925, almost the entire [US Navy] officer corps had a bachelor’s degree. However, in 1956, only 56% of commissioned officers had a bachelor’s degree, and this rate would not break 95% again until 1980.” (Lehner, 2008, p.3).
Lehner, W.D. (2008) An Analysis of Naval Officer Accession Programs. Master’s Thesis. Monterey, California: Naval Postgraduate School.