DES MOINES, Iowa (AP) – Iowa’s unemployment rate has dropped a tenth of a percentage point, to 5.3 percent in February.  A report released Friday by Iowa Workforce Development says the rate was seven-tenths of a point under the year-ago figure of 6 percent. It’s the fourth month in a row the rate has been under 6 percent.  The U.S. unemployment rate remained at 8.3 percent in February.  Director Teresa Wahlert of Iowa Workforce Development says the gain of 8,700 nonfarm jobs last month “reinforced the view that Iowa’s economy is turning the corner.”