Lexington's 911 emergency center is struggling to keep up as fewer call takers and dispatchers attempt to answer a swelling number of calls and help an increasing number of police and firefighters, city officials said Tuesday. The Enhanced 911 Center answered 477,711 calls last year. Of those, more than 217,000 are 911 or emergency calls. That's a 55 percent increase from 1998. The center has 65 staffers, a drop of about 20 percent from 1998, according to information provided Tuesday to the Lexington-Fayette Urban County Council Planning and Public Safety Committee. Robert Stack, the director of the Enhanced 911 Center, told the committee he will ask for six additional call takers for the fiscal year that begins July 1, 2020, to keep up with demand.