The Nikkei stock index suffered a fifth day of losses Monday as concerns over the U.S. economic outlook stirred heavy selling of tech shares, but declines were later trimmed on a weakening yen. The benchmark lost over 3 percent at one point in the morning, pressured by plunges on Wall Street late last week as a smaller-than-expected rise in new jobs in U.S. nonfarm payrolls in August rekindled fears of a recession in the world’s largest economy. The 225-issue Nikkei Stock Average ended down 175.72 points, or 0.48 percent, from Friday at 36,215.75, its lowest close since Aug. 9. The broader Top…