Unemployment in Iowa and the Greater Des Moines area continued to drop in March, according to statistics released Friday morning by Iowa Workforce Development. Statewide unemployment finally dipped below 5 percent to 4.9 percent. That's half a percentage point lower than it was a year ago. About half the nation's states saw unemployment decline in March, according to the U.S. Bureau of Labor Statistics. U.S. unemployment is at 7.6 percent. In Greater Des Moines, total employment grew from 325,600 employed people in February to 327,200 workers in March. That represents a 1.8 percent increase in employment from March 2012.