Aereo generated lots of attention from the media world in the run-up to its Supreme Court case this spring. Consumers may have been less interested: Paperwork filed with the U.S. Copyright Office this month indicates that the startup, which let users watch broadcast TV on the Web and mobile devices, ended 2013 with fewer than 80,000 subscribers. Aereo had 77,596 subscribers, spread out among 10 cities, at the end of 2013, according to documents the company has filed with the U.S. Copyright Office, as part of its bid to be classified as a cable company. About 27,000 of those subscribers lived in the New York City area, which was Aereo’s first market, and launched in the spring of 2012. Boston, which launched in the spring of 2013, had 12,000 subscribers. The Atlanta area, which also launched in 2013, accounted for 10,000 subscribers.