Iowa’s seasonally adjusted unemployment rate inched up to 4.5 percent in March, primarily driven by another large increase in the state’s labor force, according to Iowa Workforce Development. The March jobless rate compared with 4.4 percent for February, and 4.8 percent for March one year ago. Meanwhile, the U.S. unemployment rate for March held steady at 6.7 percent. The statewide estimate of unemployed people edged up to 76,000 in March from 74,200 in February. The number of unemployed stood at 79,300 one year ago. Iowa’s total employment level - which includes all nonfarm payrolls, agricultural workers, the self-employed and workers in private households and unpaid family members - reached a record high of 1,615,200 people. The leisure and hospitality sector gained 1,500 jobs in March, while manufacturing jobs declined for a third consecutive month, decreasing by 1,300 positions in March.