The Labor Department reported Friday that the U.S. economy added 228,000 jobs in November, exceeding an average forecast by Wall Street economists of a 200,000-job gain. The unemployment rate remained unchanged at 4.1 percent. Average wages rose 0.2 percent, or 5 cents, to $26.55 an hour. The numbers provided fresh evidence that hiring and the economy in general continue to grow stronger. U.S. stock futures added to early gains after the monthly employment report was released. Dow Jones Industrial Average futures rose by 0.3 percent, while tech-heavy Nasdaq-100 futures rose by 0.6 percent, and S&P 500 futures were up 0.3 percent.