Source: U.S. Bureau of Labor Statistics
Release: Employment Situation
The unemployment rate represents the number unemployed as a percent of the labor force.
The series comes from the 'Current Population Survey (Household Survey)'.
U.S. Bureau of Labor Statistics, Unemployment Rate - College Graduates - Doctoral Degree, 25 years and over [CGDD25O], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CGDD25O, January 16, 2018.