The Statistical Yearbook is an annual compilation of a wide range of international economic, social and environmental statistics on over 200 countries and areas, compiled from sources including UN agencies and other international, national and specialized organizations. The 56th edition contains data available to the Statistics Division as of 31 December 2012 and presents them in 65 tables on topics such as: agriculture, forestry and fishing; communication; development assistance; education; energy; environment; finance; gender; international merchandise trade; international tourism; labour force; manufacturing; national accounts; population; prices; and science and technology. The number of years of data shown in the tables varies from one to ten, with most tables covering the period up to 2010 or 2011. Accompanying the tables are technical notes providing brief descriptions of major statistical concepts, definitions and classifications.