The Statistical Yearbook provides in a single volume a comprehensive compilation of internationally available statistics on social and economic conditions and activities, at world, regional and national levels, for an appropriate historical period. It is prepared by the Statistics Division, Department of Economic and Social Affairs, of the United Nations Secretariat.. Part 1 Population and social statistics -- Part 2 Economic activity -- Part 3 Energy, environment and infrastructure -- Annex 1 Country and area nomenclature, regional and other groupings -- Annex 2 Technical notes -- Annex 3 Conversion coefficients and factors -- Annex 4 Tables added, omitted and discontinued.