According to the 2011 National Household Survey (NHS), 1,264,395 non-Whites, or 20.2% of Canada's visible minority population, live in the city of Toronto; of this, approximately 70 percent are of Asian ancestry. Annually, almost half of all immigrants to Canada settle in the Greater Toronto Area. A study released by the Toronto District School Board (TDSB) in December 2012 found that 66 percent of students ages 4 through 18 came from visible minorities. East Asians made the largest ethnic group (33 percent) along with South Asians (28 percent) coming in second of the city of Toronto's overall population.