A more recent wave (late 20th and early 21st century) of Korean immigrants have arrived as merchants and skilled labourers. Modern immigrants can be found in large cities (especially Mexico City and Monterrey), while Korean descendants are most numerous in the coastal regions like Baja California, Sonora, Guerrero, Veracruz, Campeche, Yucatán and Quintana Roo. According to INM, in 2009 there were 5,518 South Koreans and 481 North Koreans living in México There are an estimated 40,000 descendants of Korean henequen workers.