Efforts to get people signed up for health insurance are paying off in Spokane County, where the percentage of residents without insurance has dropped to less than 3 percent of the population, according to estimates from the nonprofit Better Health Together. More than 50,000 people have signed up for insurance since late 2013, about half of whom relied on trained “assisters” to help them navigate the state’s online benefit exchange. The sign-ups have occurred at libraries, jails, food banks, health fairs and bus stops, as well as clinics and hospitals.