After a reminder of the multidimensional nature of the migration phenomenon (it can be approached through a dozen human and social science disciplines) and the diversity of available sources, I projected and commented on a series of figures, generally in graphical form. In particular
- absolute number and proportion of migrants worldwide, 1990-2017 ;
- main migration flows in the world around 2015, according to the World Bank's bilateral matrix;
- main long-distance migration flows, 1846-1940 ;
- how the world's emigrants were distributed in 2017, according to income levels (GNI per capita) in the country of origin and the country of residence;
- idem according to human development indices (HDI);
- interactive migration maps: examples of sending and receiving countries;
- components of demographic change in selected countries;
- foreigners registered in France since 1851;
- Europe, 1841-1930: apparent migration based on comparison of successive censuses;
- percentage distribution of new residence permits of at least one year issued in 2015 in OECD countries;
- proportion of women by type of permit issued in 2015;
- number of forcibly displaced people in the world in 2016, according to the Office of the High Commissioner for Refugees (internally displaced people, asylum seekers, statutory refugees, stateless people) ;
- share of displaced persons hosted by developing countries;
- the various "asylum crises" in Europe over the past five decades;
- first asylum applications in the European Union, by country of origin, 2014-2016 ;
- Europe, 2016: number of positive decisions in favor of asylum seekers per million inhabitants ;
- France, 2005-2017: first residence permits of at least one year (non-Europeans);
- the five OECD countries that attracted the most foreign students in 2015 (in thousands).
