The Irish diaspora (Irish: Diaspóra na nGael) refers to ethnic Irish people and their descendants who live outside the island of Ireland. The phenomenon of migration from Ireland is recorded since the Early Middle Ages, but it can be quantified only from around 1700. Since then, between 9 and 10 million people born in Ireland have emigrated. That is more than the population of Ireland itself, which at its historical peak was 8.5 million on the eve of the Great Famine. The poorest of them went to Great Britain, especially Liverpool. Those who could afford it went further, including almost 5 million to the United States.