The population of Mexico was overwhelmingly indigenous and rural during the entire colonial period and beyond, despite the massive decrease in their numbers due to epidemic diseases. Diseases such as smallpox, measles, and others were introduced by Europeans and African slaves, especially in the sixteenth century. The indigenous population stabilized around one to one and a half million individuals in the 17th century from the most commonly accepted five to thirty million pre-contact population. During the three hundred years of the colonial era, Mexico received between 400,000 and 500,000 Europeans, between 200,000 and 250,000 African slaves. and between 40,000 and 120,000 Asians.