This is a work of general statistical information which, since 1858, has reflected the most interesting aspects of socio-economic demographics of this country. It also contains international data. In order to show a broad spectrum of themes and of issues of general interest, data from different bodies have been used, although the greater part of the information originates from the INE.

The CD-Rom version incorporates more detailed information than the book, and makes it accessible by means of a simple software application that makes it possible to generate graphs and statistical maps, make calculations and export data to other programs.