evidence: In 2015, 78.2 million workers age 16 and older in the United States were paid at hourly rates, representing 58.5 percent of all wage and salary workers. Among those paid by the hour, 870,000 workers earned exactly the prevailing federal minimum wage of $7.25 per hour. About 1.7 million had wages below the federal minimum. Together, these 2.6 million workers with wages at or below the federal minimum made up 3.3 percent of all hourly paid workers. The percentage of hourly paid workers earning the prevailing federal minimum wage or less declined from 3.9 percent in 2014 to 3.3 percent in 2015. This remains well below the percentage of 13.4 recorded in 1979, when data for hourly-paid were first collected on a regular basis. (See table 10.) [...] Gender. Among workers who were paid hourly rates in 2015, about 4 percent of women and about 3 percent of men had wages at or below the prevailing federal minimum. (See table 1.)