 The city's main industry is public administration and safety, which accounted for 27.1% of Gross Territory Product in 2018-19 and employed 32.49% of Canberra's workforce.The headquarters of many Australian Public Service agencies are located in Canberra, and Canberra is also host to several Australian Defence Force establishments, most notably the Australian Defence Force headquarters and , which is a naval communications centre that is being converted into a tri-service, multi-user depot.Other major sectors by employment include Health Care (10.54%), Professional Services (9.77%), Education and Training (9.64%), Retail (7.27%), Accommodation & Food (6.39%) and Construction (5.80%).