Where do data in the indicator tables of HDR come from?
The Human Development Report Office is primarily a user, not a producer, of statistics. To allow comparisons across countries and over time in the HDR, it relies on international data agencies with the resources and expertise to collect and compile international data on specific statistical indicators. For more information see the contact information of major data agencies.
Sources for all data used in the indicator tables are given in short citations
at the end of each table. These correspond to full references in the 
Statistical references HDR 2007/2008 [56 KB]. When an agency provides data it has collected from another
source, both sources are credited in the table notes. But when an agency has
built on the work of many other contributors, only the ultimate source is
given. The source notes also show the original data components used in any
calculations by the Human Development Report Office to ensure that all
calculations can be easily replicated.
