Net migration data is provided by the World Bank. The source is: United Nations Population Division, World Population Prospects. The dataset name is: Net Migration.
The data displayed is for 2012 (Data are five year estimates from July 2010 - June 2015) and was accessed from the World Bank on 18 December 2013.
The data is updated quarterly in April, July, September and December.
The definition of the dataset is: Net migration is the net total of migrants during the period, that is, the total number of immigrants less the annual number of emigrants, including both citizens and noncitizens.