economy during the years of the DeveLopment Decades. However, it should be notedthat while every effort has been made to assemble and prepare data in accordancewilh standard coverage and definitions, full comparability is not possible becauseof inadequacies, incompleteness and definitionar differences in the basic set ofdata underlying the tables. fn general, hisCorical data relating to gross domesticproduct and its detail, population and labour force, and demographiccharacCeristics encomp;|ss complete counlry coverage for lhe markeC economies. and have been classified and aggregated in accordance with the groupings shown in the Handbook of world Developmenh StatisCics issued by the Department of International Economic and social Affairs. Forecasts and projections of national accounting and aggregat.es given in other sections of the socio-economic perspective may be basedon quarterly data that differ from estimates reported to the United NationsStatistical Office on its annual national accounts questionnaire. In addi.tion itshould be noted that region aggregates and averages rel-ating to commodity trade, toliving conditions such as access to safe water and health services, and toattributes of physical infrasCructure such as transportation, utiliti,es and communications are based on basic data corresponding to accounting frameworks thatdi.ffer from the united Nations system of National Accounts and for this reason mayhave some ninor differences in country grouping detail and may encompass incompletecouncry coverage or data for years around Chose listed in the tables. Finally, because of the need Lo maintain comparability with the principle set of dataunderlying each section of the perspective, minor differences in country coverageand definitions may occur between different chapters. Data presented in theperspective are based on lhose available to the secretariat as at r Januarv 19g5. Annex tables 2. Tabre I assembles in tabular form quant.itative targeta and goals for worlddeveropment specified in ceneraL Assembry resolutions establishing the united Nat j.ons Development Decades .
**Analysis**
The text appears to be discussing the compilation and presentation of economic data, including gross domestic product, population, labor force, and demographic characteristics. The text also mentions national accounting and aggregation frameworks, as well as the classification and grouping of data. The focus on economic development and statistical data suggests that the text is related to economic development.

**Category**
Economic development, International trade