Source: US. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Employment Statistics (Establishment Survey).'
The source code is: CEU4348800001
US. Bureau of Labor Statistics, All Employees: Transportation and Warehousing: Support Activities for Transportation [CEU4348800001], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CEU4348800001, July 30, 2016.