In a study released in Science, a team of geographers used data snapshots to create a broad analysis of global migrations over the past 20 years. The study was conducted by three geographic researchers from the Wittgenstein Centre for Demography and Global Human Capital in Vienna. The researchers presented their data in five-year increments, from 1990 to 2010. Their research is unique, because it turns static census counts from over 150 countries into a dynamic flow of human traffic.
The study offers numerous insights, two of which are particularly interesting. First, adjusted for population growth, the global migration rate has stayed roughly the same since around since 1995 (it was higher from 1990-1995). Second, it’s not the poorest countries sending people to the richest countries; it’s countries in transition—still poor, but with some education and mobility—that are the highest migratory contributors.