Source: US. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNS14000093
US. Bureau of Labor Statistics, Unemployment Rate: 45 to 54 years [LNS14000093], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/LNS14000093, July 25, 2016.