Source: US. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNU03032217
US. Bureau of Labor Statistics, Unemployment Level: Professional and Related Occupations [LNU03032217], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/LNU03032217, August 25, 2016.