It was ranked the 43rd-most visited city in the world for the year 2015[12] and was ranked the 36th-most visited city in the world for the year 2019.[13] The Quality of Living Survey rated Chennai as the safest city in India.[14] Chennai attracts 45 percent of health tourists visiting India, and 30 to 40 percent of domestic health tourists.[15] As such, it is termed "India's health capital".[16][17] Chennai has the fifth-largest urban economy of India.[8]