 However, due to the economic effects of the revolution and the Iran–Iraq War, as well as South Korea's rising labour costs, the practise of importing labourers from South Korea to work in the Middle East slowly became less widespread during the late 1980s; for example, the proportion of Korean labourers working on construction projects for Hyundai declined from 70% to only 20-30%, with the shortfall being taken up by local labourers instead.By 2009, only 614 South Korean nationals remained in the country.They consist primarily of government officials, corporate expatriates, and Koreans married to Iranians.