By The Associated PressA big gain in the job market pushed the stock market past major milestones on Friday. The Dow Jones industrial average crossed 15,000 for the first time, and the Standard and Poor's 500 index, a broader market measure, broke through 1,600. The government said U.S. employers added 165,000 workers in April and more in February and March than previously estimated. The unemployment rate fell to the lowest level in four years, 7.5 percent. The Dow Jones industrial average gained 142.38 points, or 1 percent, to close at 14,973.96. The Standard & Poor's 500 index rose 16.83 points, or 1 percent, to 1,614.42. The Nasdaq composite index climbed 38.01 points, or 1.1 percent, to 3,378.63. For the week: The Dow is up 261.41, or 1.8 percent. The S&P 500 index is up 32.18, or 2 percent. The Nasdaq is up 99.37, or 3 percent. For the year: The Dow is up 1,869.82 points, or 14.3 percent. The S&P 500 is up 188.23 points, or 13.2 percent. The Nasdaq is up 359.12 points, or 11.9 percent.