The Skill-Selective Immigration Policies Dataset, which follows immigration policy changes targeting highly skilled migrants in OECD countries over the course of the 1980-2017 period. The below figures show the concentration of policy changes by country and year, respectively. The MNC Spatial Expansion Dataset tracks the OECD locations of subsidiaries for 25 of the world’s largest information technology companies from 1989-2017. Below, host-country counts are shown by company over the course of the recorded period.