International data for this report were downloaded from the United Nations High Commissioner for Refugees’ (UNHCR) interactive processing tool on Sept. 26, 2017. International analysis is based on calendar year.

Most U.S. data for this report were downloaded from the interactive processing tool of the U.S. State Department’s Refugee Processing Center on Oct. 2, 2017. Most U.S. analysis in this report is based on fiscal year 2002 through fiscal 2017 (in all, Oct. 1, 2001, through Sept. 30, 2017). Data on nationality, religious affiliation, language, gender and age were accessed via the demographic profile provided by the U.S. State Department’s website. Refugee destinations were accessed from the destination profile from the same online tool. See appendices for classification of religions, nationalities and languages into broader groups. Data on ethnicity and education also are available, but these data did not prove useful because of their high level of detail (ethnicity) or high amount of missing data (education).