USA official April 2018 number of working age (those aged 16-65) population is 206 million: https://fred.stlouisfed.org/series/LFWA64TTUSM647S

USA official April 2018 labour market participation rate is 62.8%: https://tradingeconomics.com/united-...mployment-rate

For those with a calculator at hand and taking those numbers at face value, 37.2% of working age Americans are jobless.

And yet the USA's official April 2018 unemployment rate is 3.9%: https://data.bls.gov/timeseries/LNS14000000