Greater Des Moines foreclosure rates decreased in April over the same period last year, according to real estate analytics firm CoreLogic Inc. The rate of foreclosures among outstanding loans in April was 1.25 percent, a drop of 0.83 percentage point from April 2013. The national rate for April was 1.77 percent. Slightly more than 3 percent of loans were at least 90 days delinquent in Greater Des Moines, down from nearly 4 percent in the year-ago period.