New Jersey’s casinos won about 4 percent more from gamblers in September than they did a year earlier. Figures released Thursday by the state Division of Gaming Enforcement show the seven casinos and online gambling outlets in Atlantic City won $235.8 million, an increase of 4.1 percent compared with September 2016. When the now-shuttered Trump Taj Mahal is excluded, Atlantic City’s casino revenue was up by 7.9 percent from a year ago. The Taj shut down last October. Matthew Levinson, chairman of the Casino Control Commission, said gaming revenue is up more than 9 percent over the past nine months. “This isn’t just luck. Business is building,” he said. Five of the seven casinos currently operating showed increases in September, led by the Golden Nugget. Bally’s and Caesars had declines.