Whether you’re a staunch small business supporter or you’ve occasionally stopped into Bushwick’s new Dunkin’ Donuts on Flushing and Knickerbocker avenues, and are anxiously awaiting the opening of the newest location of Blink Fitness, here’s a way you can make sense of the shifts in the commercial landscape of the neighborhood: for the ninth year in a row, The Center for an Urban Future crunched the numbers to determine exactly how many new retail chain locations have opened their doors in New York City.