Published this week by the Walk Free Foundation. A ranking of 162 countries
around the world, based on a combined measure of three factors: estimated
prevalence of modern slavery by population, a measure of child marriage, and a
measure of human trafficking in and out of a country.
On this theme see also the Annual Trafficking in Persons reports from the US Department of State. Free online from 2001 onwards.
Also useful is the Forced Migration Online website which provides free access to a wide variety of
resources dealing with the situation of forced migrants worldwide. These include data, articles and news.